leaving a little more space to the bottom controlbar

bigbluebutton-client/src/org/bigbluebutton/main/views/MainApplicationShell.mxml

@@ -323,7 +323,7 @@
 		<views:BrandingLogo x="{this.width - 300}" y="{this.height - 300}" />
 	</views:MainCanvas>	
 	
-	<mx:ControlBar width="100%" height="20" paddingTop="0">		
+	<mx:ControlBar width="100%" height="24" paddingTop="0">
 	  	<mx:Label text="{ResourceUtil.getInstance().getString('bbb.mainshell.copyrightLabel2',[appVersion])}" id="copyrightLabel2"/>
 	 	<mx:Spacer width="20"/>
 		<mx:Spacer width="100%"/>