diff --git a/energy-skate-park-basics/energy-skate-park-basics-strings_hr.json b/energy-skate-park-basics/energy-skate-park-basics-strings_hr.json
index 5bfe7890f6..d05a1dcdeb 100644
--- a/energy-skate-park-basics/energy-skate-park-basics-strings_hr.json
+++ b/energy-skate-park-basics/energy-skate-park-basics-strings_hr.json
@@ -1,233 +1,1061 @@
 {
-  "properties.work": {
-    "value": "Rad"
-  },
-  "controls.show-friction": {
-    "value": "Trenje na stazi"
+  "camera.zoom-in": {
+    "value": "Smanji",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Smanji",
+        "explanation": null
+      }
+    ]
   },
-  "controls.path": {
-    "value": "Putanja"
+  "camera.zoom-out": {
+    "value": "Povećaj",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Povećaj",
+        "explanation": null
+      }
+    ]
   },
-  "units.joules": {
-    "value": "Džul"
+  "controls.add-track": {
+    "value": "Oblikuj stazu",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Oblikuj stazu",
+        "explanation": null
+      }
+    ]
   },
-  "controls.mass": {
-    "value": "Masa"
+  "controls.bounciness": {
+    "value": "Kontrola ljuljanja",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Kontrola ljuljanja",
+        "explanation": null
+      }
+    ]
   },
-  "plots.energy-vs-time": {
-    "value": "Energija / Vrijeme"
+  "controls.bring-back": {
+    "value": "Vrati...",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Vrati...",
+        "explanation": null
+      }
+    ]
   },
-  "controls.skater.restore-defaults": {
-    "value": "Vrati zadano"
+  "controls.choose-character": {
+    "value": "Odaberi skejtera",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Odaberi skejtera",
+        "explanation": null
+      }
+    ]
   },
   "controls.clear-heat": {
-    "value": "Počisti termalno"
+    "value": "Počisti termalno",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Počisti termalno",
+        "explanation": null
+      }
+    ]
   },
-  "interview.description": {
-    "value": "Zakon sačuvanja energije"
+  "controls.delete-point": {
+    "value": "Makni kontrolnu točku",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Makni kontrolnu točku",
+        "explanation": null
+      }
+    ]
   },
-  "plots.plot": {
-    "value": "Energijski dijagrami"
+  "controls.delete-track": {
+    "value": "Ukloni stazu",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Ukloni stazu",
+        "explanation": null
+      }
+    ]
   },
-  "controls.delete-point": {
-    "value": "Makni kontrolnu točku"
+  "controls.edit-skater": {
+    "value": "Uredi skejtera",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Uredi skejtera",
+        "explanation": null
+      }
+    ]
   },
-  "energy.thermal": {
-    "value": "Toplinska"
+  "controls.friction": {
+    "value": "Koeficijent trenja",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Koeficijent trenja",
+        "explanation": null
+      }
+    ]
+  },
+  "controls.friction.title": {
+    "value": "Trenje",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Trenje",
+        "explanation": null
+      }
+    ]
   },
-  "energy.total": {
-    "value": "Ukupna"
+  "controls.gravity": {
+    "value": "Sila teže",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Sila teže",
+        "explanation": null
+      }
+    ]
   },
-  "controls.playback.record": {
-    "value": "REC"
+  "controls.gravity.lots": {
+    "value": "Više",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Više",
+        "explanation": null
+      }
+    ]
   },
-  "time.resume": {
-    "value": "Nastavi"
+  "controls.gravity.none": {
+    "value": "Bez",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Bez",
+        "explanation": null
+      }
+    ]
   },
-  "energy.potential.abbreviation": {
-    "value": "PE"
+  "controls.hide-friction": {
+    "value": "Sakrij trenje",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Sakrij trenje",
+        "explanation": null
+      }
+    ]
   },
-  "controls.record-path": {
-    "value": "Pokaži putanju"
+  "controls.hide-skater-properties": {
+    "value": "Sakrij svojstav skejtera",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Sakrij svojstav skejtera",
+        "explanation": null
+      }
+    ]
   },
-  "plots.bar-graph": {
-    "value": "Histogram"
+  "controls.mass": {
+    "value": "Masa",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Masa",
+        "explanation": null
+      }
+    ]
   },
-  "units.kg": {
-    "value": "kg"
+  "controls.measuring-tape": {
+    "value": "Metar",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Metar",
+        "explanation": null
+      }
+    ]
   },
-  "piechart.title": {
-    "value": "Pokaži energijske udjele"
+  "controls.path": {
+    "value": "Putanja",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Putanja",
+        "explanation": null
+      }
+    ]
   },
-  "camera.zoom-in": {
-    "value": "Smanji"
+  "controls.playback.pause": {
+    "value": "Zaustavi",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zaustavi",
+        "explanation": null
+      }
+    ]
   },
-  "plots.energy-vs-position": {
-    "value": "Energija /  Položaj"
+  "controls.playback.playback": {
+    "value": "Pogledaj ponovo",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Pogledaj ponovo",
+        "explanation": null
+      }
+    ]
   },
-  "plots.energy-vs-time.time": {
-    "value": "Vrijeme (s)"
+  "controls.playback.record": {
+    "value": "REC",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "REC",
+        "explanation": null
+      }
+    ]
   },
-  "controls.playback.pause": {
-    "value": "Zaustavi"
+  "controls.playback.rewind": {
+    "value": "Premotaj",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Premotaj",
+        "explanation": null
+      }
+    ]
   },
-  "location.earth": {
-    "value": "Zemlja"
+  "controls.record-path": {
+    "value": "Pokaži putanju",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Pokaži putanju",
+        "explanation": null
+      }
+    ]
   },
-  "piechart.show-thermal": {
-    "value": "s toplinskom energijom"
+  "controls.reset": {
+    "value": "Ponovo",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Ponovo",
+        "explanation": null
+      }
+    ]
   },
-  "controls.skater.stickiness": {
-    "value": "Priljubljenost"
+  "controls.restart-skater": {
+    "value": "Vrati skejtera",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Vrati skejtera",
+        "explanation": null
+      }
+    ]
   },
-  "properties.energy": {
-    "value": "Energija (J)"
+  "controls.show-background": {
+    "value": "Pokaži pozadinu",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Pokaži pozadinu",
+        "explanation": null
+      }
+    ]
   },
-  "energy-skate-park.title": {
-    "value": "Zakon sačuvanja energije"
+  "controls.show-friction": {
+    "value": "Trenje na stazi",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Trenje na stazi",
+        "explanation": null
+      }
+    ]
   },
   "controls.show-grid": {
-    "value": "Mreža"
+    "value": "Mreža",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Mreža",
+        "explanation": null
+      }
+    ]
   },
-  "location.space": {
-    "value": "Svemir"
+  "controls.skater.restore-defaults": {
+    "value": "Vrati zadano",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Vrati zadano",
+        "explanation": null
+      }
+    ]
   },
-  "time.clear": {
-    "value": "Počisti"
+  "controls.skater.stickiness": {
+    "value": "Priljubljenost",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Priljubljenost",
+        "explanation": null
+      }
+    ]
   },
-  "controls.show-background": {
-    "value": "Pokaži pozadinu"
+  "controls.stop-recording-path": {
+    "value": "Zaustavi",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zaustavi",
+        "explanation": null
+      }
+    ]
+  },
+  "energy-skate-park-basics.title": {
+    "value": "Energija u skejt parku: osnove",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Energija u skejt parku: osnove",
+        "explanation": null
+      }
+    ]
   },
   "energy-skate-park.description": {
-    "value": "Zakon sačuvanja energije za skejtere!"
+    "value": "Zakon sačuvanja energije za skejtere!",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zakon sačuvanja energije za skejtere!",
+        "explanation": null
+      }
+    ]
   },
-  "plots.energy-vs-time.energy": {
-    "value": "Energija (Džul)"
+  "energy-skate-park.title": {
+    "value": "Zakon sačuvanja energije",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zakon sačuvanja energije",
+        "explanation": null
+      }
+    ]
   },
-  "file-menu.save": {
-    "value": "Spremi"
+  "energy.energy": {
+    "value": "Energija",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Energija",
+        "explanation": null
+      }
+    ]
   },
-  "controls.reset": {
-    "value": "Ponovo"
+  "energy.kinetic": {
+    "value": "Kinetička",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Kinetička",
+        "explanation": null
+      }
+    ]
   },
-  "controls.gravity.lots": {
-    "value": "Više"
+  "energy.kinetic.abbreviation": {
+    "value": "KE",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "KE",
+        "explanation": null
+      }
+    ]
   },
-  "location.moon": {
-    "value": "Mjesec"
+  "energy.potential": {
+    "value": "Potencijalna",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Potencijalna",
+        "explanation": null
+      }
+    ]
   },
-  "message.confirm-reset": {
-    "value": "Sigurni ste da želiti iz početka?"
+  "energy.potential-negative": {
+    "value": "Potencijalna energija (-)",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Potencijalna energija (-)",
+        "explanation": null
+      }
+    ]
   },
-  "energy.kinetic": {
-    "value": "Kinetička"
+  "energy.potential.abbreviation": {
+    "value": "PE",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "PE",
+        "explanation": null
+      }
+    ]
   },
-  "energy.potential": {
-    "value": "Potencijalna"
+  "energy.thermal": {
+    "value": "Toplinska",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Toplinska",
+        "explanation": null
+      }
+    ]
   },
-  "camera.zoom-out": {
-    "value": "Povećaj"
+  "energy.total": {
+    "value": "Ukupna",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Ukupna",
+        "explanation": null
+      }
+    ]
   },
-  "invitaiton.arrow-keys": {
-    "value": ""
+  "file-menu.open": {
+    "value": "Otvori",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Otvori",
+        "explanation": null
+      }
+    ]
   },
-  "controls.gravity.none": {
-    "value": "Bez"
+  "file-menu.save": {
+    "value": "Spremi",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Spremi",
+        "explanation": null
+      }
+    ]
   },
-  "file-menu.open": {
-    "value": "Otvori"
+  "interview.description": {
+    "value": "Zakon sačuvanja energije",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zakon sačuvanja energije",
+        "explanation": null
+      }
+    ]
   },
-  "plots.copy": {
-    "value": "Kopiraj"
+  "interview.name": {
+    "value": "Zakon sačuvanja energije",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zakon sačuvanja energije",
+        "explanation": null
+      }
+    ]
   },
-  "units.meters": {
-    "value": "metar"
+  "invitaiton.arrow-keys": {
+    "value": ""
   },
-  "controls.hide-skater-properties": {
-    "value": "Sakrij svojstav skejtera"
+  "label.potential-energy-reference": {
+    "value": "Ref. točka potencijalne energije",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Ref. točka potencijalne energije",
+        "explanation": null
+      }
+    ]
   },
-  "controls.playback.rewind": {
-    "value": "Premotaj"
+  "label.zero-potential-energy": {
+    "value": "PE=0 na točkastoj liniji",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "PE=0 na točkastoj liniji",
+        "explanation": null
+      }
+    ]
+  },
+  "large": {
+    "value": "Velika",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Velika",
+        "explanation": null
+      }
+    ]
   },
-  "controls.choose-character": {
-    "value": "Odaberi skejtera"
+  "location": {
+    "value": "Mjesto:",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Mjesto:",
+        "explanation": null
+      }
+    ]
   },
-  "controls.delete-track": {
-    "value": "Ukloni stazu"
+  "location.earth": {
+    "value": "Zemlja",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zemlja",
+        "explanation": null
+      }
+    ]
   },
-  "energy.energy": {
-    "value": "Energija"
+  "location.jupiter": {
+    "value": "Jupiter",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Jupiter",
+        "explanation": null
+      }
+    ]
   },
-  "message.paused": {
-    "value": "Zaustavljeno"
+  "location.moon": {
+    "value": "Mjesec",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Mjesec",
+        "explanation": null
+      }
+    ]
   },
-  "controls.friction": {
-    "value": "Koeficijent trenja"
+  "location.space": {
+    "value": "Svemir",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Svemir",
+        "explanation": null
+      }
+    ]
   },
-  "interview.name": {
-    "value": "Zakon sačuvanja energije"
+  "message.confirm-reset": {
+    "value": "Sigurni ste da želiti iz početka?",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Sigurni ste da želiti iz početka?",
+        "explanation": null
+      }
+    ]
   },
-  "location.jupiter": {
-    "value": "Jupiter"
+  "message.confirm-reset-title": {
+    "value": "Potvrdi!",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Potvrdi!",
+        "explanation": null
+      }
+    ]
   },
-  "energy.potential-negative": {
-    "value": "Potencijalna energija (-)"
+  "message.paused": {
+    "value": "Zaustavljeno",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zaustavljeno",
+        "explanation": null
+      }
+    ]
+  },
+  "normal": {
+    "value": "Normalno",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Normalno",
+        "explanation": null
+      }
+    ]
+  },
+  "pieChart": {
+    "value": "\"Pita\" grafikon",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "\"Pita\" grafikon",
+        "explanation": null
+      }
+    ]
   },
-  "units.accel": {
-    "value": "N/kg"
+  "piechart.ignore-thermal": {
+    "value": "Zamenari toplinske gubutke",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Zamenari toplinske gubutke",
+        "explanation": null
+      }
+    ]
   },
-  "controls.bounciness": {
-    "value": "Kontrola ljuljanja"
+  "piechart.show": {
+    "value": "Pokaži udjele",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Pokaži udjele",
+        "explanation": null
+      }
+    ]
   },
-  "controls.gravity": {
-    "value": "Sila teže"
+  "piechart.show-thermal": {
+    "value": "s toplinskom energijom",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "s toplinskom energijom",
+        "explanation": null
+      }
+    ]
   },
-  "message.confirm-reset-title": {
-    "value": "Potvrdi!"
+  "piechart.title": {
+    "value": "Pokaži energijske udjele",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Pokaži energijske udjele",
+        "explanation": null
+      }
+    ]
   },
-  "label.potential-energy-reference": {
-    "value": "Ref. točka potencijalne energije"
+  "plots.bar-graph": {
+    "value": "Histogram",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Histogram",
+        "explanation": null
+      }
+    ]
   },
-  "controls.restart-skater": {
-    "value": "Vrati skejtera"
+  "plots.copy": {
+    "value": "Kopiraj",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Kopiraj",
+        "explanation": null
+      }
+    ]
+  },
+  "plots.energy-vs-position": {
+    "value": "Energija /  Položaj",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Energija /  Položaj",
+        "explanation": null
+      }
+    ]
   },
   "plots.energy-vs-position-save": {
-    "value": "Energija /  Položaj (spremi #"
+    "value": "Energija /  Položaj (spremi #",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Energija /  Položaj (spremi #",
+        "explanation": null
+      }
+    ]
   },
-  "controls.hide-friction": {
-    "value": "Sakrij trenje"
+  "plots.energy-vs-time": {
+    "value": "Energija / Vrijeme",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Energija / Vrijeme",
+        "explanation": null
+      }
+    ]
   },
-  "controls.add-track": {
-    "value": "Oblikuj stazu"
+  "plots.energy-vs-time.energy": {
+    "value": "Energija (Džul)",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Energija (Džul)",
+        "explanation": null
+      }
+    ]
   },
-  "piechart.show": {
-    "value": "Pokaži udjele"
+  "plots.energy-vs-time.time": {
+    "value": "Vrijeme (s)",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Vrijeme (s)",
+        "explanation": null
+      }
+    ]
   },
-  "controls.playback.playback": {
-    "value": "Pogledaj ponovo"
+  "plots.plot": {
+    "value": "Energijski dijagrami",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Energijski dijagrami",
+        "explanation": null
+      }
+    ]
   },
-  "label.zero-potential-energy": {
-    "value": "PE=0 na točkastoj liniji"
+  "properties.energy": {
+    "value": "Energija (J)",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Energija (J)",
+        "explanation": null
+      }
+    ]
+  },
+  "properties.speed": {
+    "value": "Brzina",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Brzina",
+        "explanation": null
+      }
+    ]
   },
-  "piechart.ignore-thermal": {
-    "value": "Zamenari toplinske gubutke"
+  "properties.work": {
+    "value": "Rad",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Rad",
+        "explanation": null
+      }
+    ]
+  },
+  "screen.friction": {
+    "value": "Trenje",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Trenje",
+        "explanation": null
+      }
+    ]
+  },
+  "screen.introduction": {
+    "value": "Uvod",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Uvod",
+        "explanation": null
+      }
+    ]
+  },
+  "screen.trackPlayground": {
+    "value": "Napravi stazu",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Napravi stazu",
+        "explanation": null
+      }
+    ]
+  },
+  "slow.motion": {
+    "value": "Usporeno",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Usporeno",
+        "explanation": null
+      }
+    ]
+  },
+  "small": {
+    "value": "Mala",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "Mala",
+        "explanation": null
+      }
+    ]
   },
-  "energy.kinetic.abbreviation": {
-    "value": "KE"
+  "time.clear": {
+    "value": "Počisti",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Počisti",
+        "explanation": null
+      }
+    ]
   },
-  "controls.measuring-tape": {
-    "value": "Metar"
+  "time.resume": {
+    "value": "Nastavi",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Nastavi",
+        "explanation": null
+      }
+    ]
   },
-  "controls.stop-recording-path": {
-    "value": "Zaustavi"
+  "units.accel": {
+    "value": "N/kg",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "N/kg",
+        "explanation": null
+      }
+    ]
   },
-  "location": {
-    "value": "Mjesto:"
+  "units.joules": {
+    "value": "Džul",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "Džul",
+        "explanation": null
+      }
+    ]
   },
-  "controls.edit-skater": {
-    "value": "Uredi skejtera"
+  "units.kg": {
+    "value": "kg",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "kg",
+        "explanation": null
+      }
+    ]
   },
-  "controls.bring-back": {
-    "value": "Vrati..."
+  "units.meters": {
+    "value": "metar",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808702,
+        "oldValue": "",
+        "newValue": "metar",
+        "explanation": null
+      }
+    ]
+  },
+  "zeroMeters": {
+    "value": "0 metara",
+    "history": [
+      {
+        "userId": 445867,
+        "timestamp": 1507715808701,
+        "oldValue": "",
+        "newValue": "0 metara",
+        "explanation": null
+      }
+    ]
   }
 }
\ No newline at end of file