added fortify function
fortify function
Adding basic support for clickable territory asset
- adding cutouts for territories
- adding territory asset which shows current owner
- adding territory init in graphics startup routine
Merge remote-tracking branch 'refs/remotes/upstream/master'

Conflicts:
	risk/errors/game_master.py
	risk/game_master.py
Merge pull request #31 from B-Lock/master

Added move troops function (fortify)