Fixed annotation
Added message repos tests
Removed commented code
Merge branch 'refactoring-for-unit-tests' of https://github.com/claroline/Claroline into refactoring-for-unit-tests-stefk

Conflicts:
	src/core/Claroline/CoreBundle/Manager/UserManager.php
Merge pull request #72 from claroline/refactoring-for-unit-tests-stefk

Refactoring for unit tests stefk