8Bit Artist: The Great Refactor P1

I've begun splitting DrawingActivity, it has been pretty great. I'm going
to have one activity that will switch fragments for each screen:
1. Sign In
2. Options (Sign out, Start Match, See Matches)
3. Game (Your draw, their guess, their draw, your guess, etc.)

I may potentially split up Game more, however, I think that might be a bit
overkill. Anyways, be warned: These changes are not complete, the Games
screen does not work at all!