Fixed a typo.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>
Added all data-models, set debug flag.

Data-models store scores, positions, and ingredients right now. Does not
store trashed sandwiches. Located under folder RopGame located in
external storage, if on Android, or in home directory, if PC.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>
Fixed a small bug in how GameScreen is created.

Resulted in grill sounds playing at same time as front sounds, when game
first started.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>