Added an End Level entity, though end level messages are not handled yet.
Merge branch 'master' of https://github.com/Valtis/Peliprojekti-2013

Conflicts:
	Koulupeliprojekti/src/Level/LevelManager.cpp
added inclue <cmath>
Merge branch 'master' of https://github.com/Valtis/Peliprojekti-2013
Merge branch 'master' of https://github.com/Valtis/Peliprojekti-2013
Merge branch 'master' of https://github.com/Valtis/Peliprojekti-2013
Merge branch 'master' of https://github.com/Valtis/Peliprojekti-2013