Make UIManager tell Decks when to activate Cards.

Signed-off-by: Zach Bennett <xslingshot@gmail.com>
Make Cards dragged from Decks look like sort placeholders.

Signed-off-by: Zach Bennett <xslingshot@gmail.com>
Simplify Card drag by only using sortable, not draggable.

Signed-off-by: Zach Bennett <xslingshot@gmail.com>
Remove do-nothing lines of code.

Signed-off-by: Zach Bennett <xslingshot@gmail.com>
Rearrange UIManager functions.

Signed-off-by: Zach Bennett <xslingshot@gmail.com>
Make Deck populate next Card when a Card is drawn.

Signed-off-by: Zach Bennett <xslingshot@gmail.com>