Remove some cruft.
Update User model and add a Game model.
Properly compute whether a Tile is disabled or not.
Stub JoinRequest.
Simply Board <=> TileFactory integration.
Strengthen and refactor a bit the game refreshing mechanism. Still much to do here to get a clean solution though.
Forgot to remove this comment earlier.
Add a JoinRequest model.
Add a Tile model.
Lazily compute some models properties.
Add a Question model.
Close #15, #16 and #17.