Rename classname; Refactor click on video method

css/_videolayout_default.scss

     position: relative;
     text-align: center;
 
-    &__wrapper {
+    &__background {
         @include topLeft();
         width: 100%;
         height: 100%;

index.html

 
             <div id="remoteVideos">
                 <span id="localVideoContainer" class="videocontainer videocontainer_small">
-                    <div class="videocontainer__wrapper"></div>
+                    <div class="videocontainer__background"></div>
                     <span id="localVideoWrapper">
                         <!--<video id="localVideo" autoplay muted></video> - is now per stream generated -->
                     </span>

modules/UI/UI.js

 };
 
 UI.clickOnVideo = function (videoNumber) {
-    let videos = $("#remoteVideos .videocontainer:not(#mixedstream)").toArray();
-
-    // Separate remotes from local videocontainer and reverse order of
-    // remote ones
-    let videosMap = videos.reduce((videoObj, video) => {
-              if(video.id === 'localVideoContainer') {
-                  videoObj.local = video;
-              } else {
-                  videoObj.remote.unshift(video);
-              }
-              return videoObj;
-          }, { local: null, remote: [] });
-
-    let sortedVideos = [videosMap.local, ...videosMap.remote];
-    if (sortedVideos.length > videoNumber) {
-        $(sortedVideos[videoNumber]).click();
+    let videos = $("#remoteVideos .videocontainer:not(#mixedstream)");
+    let videosLength = videos.length;
+
+    if(videosLength <= videoNumber) {
+        return;
     }
+    let videoIndex = videoNumber === 0 ? 0 : videosLength - videoNumber;
+    videos[videoIndex].click();
 };
 
 //Used by torture

modules/UI/videolayout/RemoteVideo.js

     container.className = 'videocontainer';
 
     let wrapper = document.createElement('div');
-    wrapper.className = 'videocontainer__wrapper';
+    wrapper.className = 'videocontainer__background';
     container.appendChild(wrapper);
 
     let indicatorBar = document.createElement('div');