Fixed issue #2197: Chat-Widget disappears after close.

public/assets/chat/chat.coffee

@@ -1223,10 +1223,9 @@ do($ = window.jQuery, window) ->
       document.getElementsByTagName('head')[0].appendChild(newSS)
 
     onCssLoaded: =>
+      @cssLoaded = true
       if @socketReady
         @onReady()
-      else
-        @cssLoaded = true
 
     startTimeoutObservers: =>
       @idleTimeout = new Timeout(

public/assets/chat/chat.js

@@ -1562,10 +1562,9 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
     };
 
     ZammadChat.prototype.onCssLoaded = function() {
+      this.cssLoaded = true;
       if (this.socketReady) {
         return this.onReady();
-      } else {
-        return this.cssLoaded = true;
       }
     };