CC-3842: Next scheduled show gets registered as next scheduled song

- removed case where light stays on for first 5 seconds of track
- also removed function calls no longer in use (notifySongStart(), and notifyShowStart())
- removed nowplayingdatagrid.js since it is no longer in use

airtime_mvc/public/js/airtime/dashboard/dashboard.js

@@ -48,20 +48,12 @@ function secondsTimer(){
 function newSongStart(){
     nextSongPrepare = true;
     currentSong = nextSong;
-    nextSong = null;
-
-    if (typeof notifySongStart == "function")   
-        notifySongStart();
-    
+    nextSong = null;   
 }
 
 function nextShowStart(){
     nextShowPrepare = true;
     currentShow[0] = nextShow.shift();
-
-    //call function in nowplayingdatagrid.js
-    if (typeof notifyShowStart == "function")
-        notifyShowStart(currentShow[0]);
 }
 
 /* Called every "uiUpdateInterval" mseconds. */
@@ -78,18 +70,16 @@ function updateProgressBarValue(){
     $('#progress-show').attr("style", "width:"+showPercentDone+"%");
 
     var songPercentDone = 0;
-    var songElapsedTime = 0;
     var scheduled_play_div = $("#scheduled_play_div");
     var scheduled_play_line_to_switch = scheduled_play_div.parent().find(".line-to-switch");
     
-    if (currentSong !== null){
+    if (currentSong !== null){	
         songPercentDone = (estimatedSchedulePosixTime - currentSong.songStartPosixTime)/currentSong.songLengthMs*100;
-        songElapsedTime = estimatedSchedulePosixTime - currentSong.songStartPosixTime;
         if (songPercentDone < 0 || songPercentDone > 100){
             songPercentDone = 0;        
             currentSong = null;
         } else {
-            if ( (currentSong.media_item_played == true && currentShow.length > 0) || songElapsedTime < 5000 ){
+            if (currentSong.media_item_played == true && currentShow.length > 0) {
                 scheduled_play_line_to_switch.attr("class", "line-to-switch on");
                 scheduled_play_div.addClass("ready");
                 scheduled_play_source = true;