BitmapManager: BitmapCache.Key creation don't require a Context anymore, updated everything. It was used to load resources, ResKey now uses a Resources/resID pair, so we can even load resources from other packages. Added some docs and clean for AsyncImageView.
Updated Android Studio to 0.8.1 and added support for new resources annotations (can't check that the drawable is an image file (and not an xml drawable), at least it'll warn if someone try to pass a random int).