added gradle / Android Studio buildability
upped the minversion to avoid the compat crap
adding the actionbar icons and the assets for same
updating the build stuff
Add card filtering + general cleanup

In the process of adding filtering to the card library as well as
deckbuilding's add card view
shouldnt have commited this in the first place, oops
Allow Deck Modification from card detail (UI)

Added the UI so that the user can modify the count of cards in their deck from
the detail view. This shows the current count of the card included in the deck,
as well as buttons for modifying that count. The buttons don't currently do
anything, but they are present for prettification and listeners to be applied to
them. The count TextView is hooked up and works correctly (hence all the
CardEntry classes that mirror the Card classes).