Feature/notifications

[MrHen]

Two major refactoring pushes here.

• Combine the untargeted and targeted battlecries to use a common interface and integrate them directly into the effect pattern
• Create a hand effect pattern similar to the character effect pattern and merge logic wherever I could

The next pattern worth looking at is for cards like Animal Companion which don't really effect anything in particular. But I'll deal with that later.

I'm hoping to get a big chunk of cards implemented soon.