Update Deck and Cards working
Update Deck and Cards updates properly

It will now update the SingleDeckFragment according to the updates done.
Changes to App bar and EditDeckFragment

Added back arrow from SingleEditFragment
DeckName and Cards are updated separately and only if changes happened
Create card, prepare for delete card, minor fix

New Card is working
Preparation for Delete Card
Changed Toolbar icons (should change to black)
Fixed CardProvider killing the app when querying for deck using deckname
Merge pull request #2 from i-Recall/crud-deck

Crud deck