fixed taskbar for chat so it doesnt show multiple taskbar buttons for the same person

public/src/modules/chat.js

@@ -40,10 +40,9 @@ define(['taskbar'], function(taskbar) {
 			});
 
 			addSendHandler(chatModal, touid);	
-
-			taskbar.push('chat', uuid, {title:'chat with '+username});
 		}
 
+		taskbar.push('chat', chatModal.attr('UUID'), {title:'chat with '+username});
 		return chatModal;
 	}
 

public/src/modules/taskbar.js

@@ -51,6 +51,10 @@ define(function() {
 			taskbar.update();
 		},
 		push: function(module, uuid, options) {
+			var element = $(taskbar.tasklist).find('li[data-uuid="'+uuid+'"]');
+			if(element.length)
+				return;
+			
 			var	btnEl = document.createElement('li');
 
 			btnEl.innerHTML =	'<a href="#">' +