Implemented collisions for Players displacements. Issues #6. Need to be tested.
Fixed a bug (typo...) in map_parser.py + added two attributes. + added bounds checks when checking for collision in the GameEngine
Added two tests for the collisions when moving + fixed the speeds in the others tests. Issue #6
Documentation
Merge branch 'master' into server

Conflicts:
	common/map_parser.py
Added documentation, previous one was not clear enough
Oops, sight_angle is different from move_angle...
`handle_move` done
Merge branch 'gameengine' into server
documentation
First (basic) implementation of god frame done
Fix erroneous comment (it was disabling the occlusion)
Merge branch 'gameengine' into server
started to fix the camera position
Shapely installed.
Minor modifications
Again, minor changes.
merge with server. Hopefully fixed the display bug with diagonal deplacement
added a method to get the spawn tile of a player, by providing its team id and player id.
implemented the turn events. They are currently commented out, since the server does not handle them