Fixes muting particular remote participant.

There was a bug that the handlers for menuItem for mute and kick are added for all remote participants. When clicked multiple handlers are executed and the action will be executed for all remote participants.

modules/UI/videolayout/RemoteVideo.js

     this.emitter = emitter;
     this.videoSpanId = `participant_${id}`;
     SmallVideo.call(this, VideoLayout);
+    this.hasRemoteVideoMenu = false;
     this.addRemoteVideoContainer();
     this.connectionIndicator = new ConnectionIndicator(this, id);
     this.setDisplayName();
         APP.translation.translateString("videothumbnail.muted") +
         "</div>";
 
-    muteLinkItem.id = "muteLinkItem";
+    muteLinkItem.id = "mutelink_" + this.id;
 
     if (this.isMuted) {
         muteLinkItem.innerHTML = mutedHTML;
     }
 
     // Delegate event to the document.
-    $(document).on("click", ".mutelink", function(){
+    $(document).on("click", "#mutelink_" + this.id, function(){
 
         if (this.isMuted)
             return;
 
     ejectLinkItem.className = 'ejectlink';
     ejectLinkItem.innerHTML = ejectIndicator + ' ' + ejectText;
+    ejectLinkItem.id = "ejectlink_" + this.id;
 
-    $(document).on("click", ".ejectlink", function(){
+    $(document).on("click", "#ejectlink_" + this.id, function(){
         this.emitter.emit(UIEvents.USER_KICKED, this.id);
         this.popover.forceHide();
     }.bind(this));
         spanElement.appendChild(menuElement);
 
         this._initPopupMenu(this._generatePopupContent());
+        this.hasRemoteVideoMenu = true;
     };
 
 } else {
     if (menuSpan.length) {
         this.popover.forceHide();
         menuSpan.remove();
+        this.hasRemoteVideoMenu = false;
     }
 };
 

modules/UI/videolayout/VideoLayout.js

                 remoteVideo.createModeratorIndicatorElement();
             } else if (isModerator) {
                 // We are moderator, but user is not - add menu
-                if ($(`#remote_popupmenu_${id}`).length <= 0) {
+                if(!remoteVideo.hasRemoteVideoMenu) {
                     remoteVideo.addRemoteVideoMenu();
                 }
             }