Merged pull-request #246
Several bugfixes
Updated android gradle plugin
Removing last item in the queue didn't work
Fixed nullpointerexception caused by FeedlistFragment
Fixed proguard.cfg
Merge branch 'develop' of https://github.com/danieloeh/AntennaPod into move-to-top
added move to top to individual items in the episode queue.  Move to bottom coming soon.
* updated code to reuse existing function for moving items in the queue
* added 'move to bottom'