Pass intercom app id in environment for Grunt build

Gruntfile.js

@@ -287,6 +287,7 @@ module.exports = function(grunt) {
             var locals = {
               version: version,
               env: require('./client/config/json/environment.json').environment,
+              intercomAppId: require('./client/config/json/environment.json').intercomAppId,
               commitHash: require('./client/config/json/commit.json').commitHash,
               commitTime: require('./client/config/json/commit.json').commitTime,
               apiHost: require('./client/config/json/api.json').host
@@ -477,7 +478,8 @@ module.exports = function(grunt) {
       },
       function (cb) {
         var configObj = {
-          environment: environment || process.env.NODE_ENV || 'development'
+          environment: environment || process.env.NODE_ENV || 'development',
+          intercomAppId: process.env.INTERCOM_APP_ID || 'xs5g95pd'
         };
         var configJSON = JSON.stringify(configObj);
         fs.writeFile(path.join(clientPath, 'config', 'json', 'environment.json'), configJSON, function () {

client/services/configs/serviceIntercomAppId.js

@@ -0,0 +1,4 @@
+'use strict';
+
+require('app')
+  .value('intercomAppId', require('config/environment').intercomAppId);

client/services/serviceEventTracking.js

@@ -26,13 +26,9 @@ function EventTracking(
   $window,
   assign,
   keypather,
-  configEnvironment
+  intercomAppId
 ) {
-  if (configEnvironment === 'production') {
-    INTERCOM_APP_ID = 'wqzm3rju'; // production ID
-  } else {
-    INTERCOM_APP_ID = 'xs5g95pd'; // test ID
-  }
+  INTERCOM_APP_ID = intercomAppId;
   _keypather = keypather;
   _$location = $location;
 

layout.jade

@@ -204,11 +204,6 @@ html(
           ) Dismiss
 
     //- Intercom
-    if env === 'production'
-      script(
-        src = "https://widget.intercom.io/widget/wqzm3rju"
-      )
-    else
-      script(
-        src = "https://widget.intercom.io/widget/xs5g95pd"
-      )
+    script(
+      src = "https://widget.intercom.io/widget/" + intercomAppId
+    )