added a 'move to top' function to DBWriter that puts the provided item at the top of the queue.  There may be a way to do this while re-using the existing move function.  Perhaps a helper is in order.
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'
Added classes for accessing gpodder.net service

Directory + Subscription upload/download
Added ImageDiskCache
Improved AddFeedActivity layout, added gpodder.net toplist fragment
Added search, taglist, pocdasttaglist etc.
Merge branch 'move-to-top' of git://github.com/TomHennen/AntennaPod into TomHennen-move-to-top
Eventdistributor listener was registered incorrectly
New episodes weren't marked as unread
Temporarily disabled episode filter option

This might be added again later
FeedItemStatistics were wrong if podcast had items with no media file
Set user agent header when making http requests
Added subscribe button to online feed view
Images in podcast directory should now be displayed correctly
Visual improvements when loading images
Added GpodnetPreferences
Implemented authentication process
Added subscription syncing