move away from singleton by injecting controller rather than using getDefault();
use EventBus in DrawableTagsManager (used to be TagUtils)
requires equal and hashcode method implemented on TagName
rename and comment DrawableViewBase
more cleanup of category related code
comments
license header; cleanup in DrawableDB, GroupManager, and ImageGalleryController
cleanup HashSetManager and DrawableGroup
cleanup/commetns DrawableTile, DrawableView, DrawableViewBase
more cleanup ind DrawableDB
Changing sort method and ascending/descending now updates the GUI immediately.
Properly decrement uncategorized file count.
Fixed a few case-closing exceptions.