[Timer] Updated Timer UI to indicate playing or paused state

Removed PauseCheck & TimeOfPause from properties, Removed duplicate functionality Resume class , replaced peeking restart at 0 button with persistent play/pause button

platform/features/clock/res/templates/timer.html

@@ -23,7 +23,7 @@
 	<div class="l-elem-wrapper l-flex-row">
 		<a ng-click="timer.clickButton()"
 			title="{{timer.buttonText()}}"
-			class="flex-elem control s-icon-button {{timer.buttonCssClass()}}"></a>
+			class="flex-elem s-icon-button {{timer.buttonCssClass()}}"></a>
 	    <span class="flex-elem l-value {{timer.signClass()}}">
 	        <span class="value"
 		        ng-class="{ active:timer.text() }">{{timer.text() || "--:--:--"}}