New MVC GSOC 2014

https://groups.google.com/forum/#!topic/joomla-dev-cms/AH6piuw2IR0

http://gwilson.org/index.php/new-mvc
Why not return false, after setting the app message? Then you can get rid of the else, return to one level of indention. Also if there is nothing to checkin then the there is nothing left to be done right.