Renamed class and refactor code

Signed-off-by: Artur Bergen <artur.bergen@struktur.de>

css/style.css

@@ -420,12 +420,12 @@ video {
 	opacity: .7;
 }
 
-.nameIndicator button.video-available {
+.nameIndicator button.no-video-available {
 	opacity: .7;
 	cursor: not-allowed;
  }
 
-.nameIndicator button.video-available:active {
+.nameIndicator button.no-video-available:active {
 	background-color: transparent;
 }
 

js/app.js

@@ -629,7 +629,7 @@
 			var avatarContainer = $hideVideoButton.closest('.videoView').find('.avatar-container');
 			var localVideo = $hideVideoButton.closest('.videoView').find('#localVideo');
 
-			if (!$hideVideoButton.hasClass('video-available')) {
+			if (!$hideVideoButton.hasClass('no-video-available')) {
 				$hideVideoButton.attr('data-original-title', t('spreed', 'Enable video'))
 				 .addClass('video-disabled icon-video-off-white')
 				 .removeClass('icon-video-white');

js/webrtc.js

@@ -955,11 +955,10 @@ var spreedPeerConnectionTable = [];
 				OCA.SpreedMe.app.enableVideo();
 			}
 
-			var availableStream = $(OCA.SpreedMe.webrtc.webrtc.localStream.getVideoTracks());
 			var $hideVideoButton = $('#hideVideo');
-			if(availableStream.length < 1 || availableStream.length == undefined) {
+			if(OCA.SpreedMe.webrtc.webrtc.localStream.getVideoTracks() < 1) {
 				$hideVideoButton.removeClass('video-disabled icon-video-off-white')
-				.addClass('video-available icon-video-off-white')
+				.addClass('no-video-available icon-video-off-white')
 				.attr('data-original-title', t('spreed', 'No Camera'));
 			}
 		});