Added option for pin on post
Added search:
Added UI for search, normal SearchView + a bar at the top telling how many results were found.
Added filtering support for PostAdapter.
Added tap to scroll when filtering a thread.
Changed the imageload and displayer.
Now using Ion to load the images, with a custom file cache.
This allows downloads bigger than the available ram, and a progressbar.
The subsampling-scale-image-view allows huge images to be displayed, even when there's not a lot of ram.
Added "tap to refresh" for when auto refresh is disabled.
Fixed pins not remembering their position.
Forgot that the loadable needs to be the original one to remember the list position.
Immediately show "Now loading" when tapping the refresh bar.
Added reverse image search.
Closes #14
Some fixes for SubsamplingImageView
Fix videos not resetting the progressbar when loaded.
Beta release for 33
Updated notification icon, it's now made by illustrator.
Replaced the gif decoder.
Closes #16
Hack fix for searchview filter leaking to the other thread pane.

Until this get properly done, just close the view as soon as the panel slides.
It appears SearchView + SlidingPaneLayout is a bit troublesome.
Move post parsing into a seperate class.
Remove loadable from post.finish
Decreased volley cache site, reduce startup time.

The startup time needs to be fixed another time.
Fix filename filtering
Android seems to think different about the \w regex flag.
Also prevent empty names by replacing it with an underscore intead of a space.
Add license for android-gif-drawable
licences.html -> licenses.html
Update volley
Update subsample-scale-image-view