www: tentative fix for iOS playback issues

Playback on iOS reportedly doesn't work as it should, with Safari
maximizing each camera view in turn instead of playing them all at once.
Internet lore indicates that adding the "playsinline" attribute to the
<video> tags disables this behavior, so add that.

teslausb-www/html/index.html

@@ -910,20 +910,20 @@
       </div>
       <div>
         <div class="videoholder layout3">
-          <video disableRemotePlayback id="leftview" class="videogriditem leftview" style="z-index:1;"></video>
+          <video disableRemotePlayback playsinline id="leftview" class="videogriditem leftview" style="z-index:1;"></video>
           <canvas id="leftviewfreeze" class="videogriditem leftview"  style="z-index:0;"></canvas>
 
-          <video disableRemotePlayback id="frontview" class="videogriditem frontview" style="z-index:1;"></video>
+          <video disableRemotePlayback playsinline id="frontview" class="videogriditem frontview" style="z-index:1;"></video>
           <canvas id="frontviewfreeze" class="videogriditem frontview" style="z-index:0;"></canvas>
 
-          <video disableRemotePlayback id="rightview" class="videogriditem rightview" style="z-index:1;"></video>
+          <video disableRemotePlayback playsinline id="rightview" class="videogriditem rightview" style="z-index:1;"></video>
           <canvas id="rightviewfreeze" class="videogriditem rightview" style="z-index:0;"></canvas>
 
           <div class="videogriditem mapview" style="margin:0px;z-index:0;">
             <iframe id="sentrymap"></iframe>
           </div>
 
-          <video disableRemotePlayback id="backview" class="videogriditem backview" style="z-index:1;"></video>
+          <video disableRemotePlayback playsinline id="backview" class="videogriditem backview" style="z-index:1;"></video>
           <canvas id="backviewfreeze" class="videogriditem backview" style="z-index:0;"></canvas>
 
           <div id="infoholder" class="videogriditem infoview" style="margin-left:12px;color:white;">