Refactored role-user with manager
Merge branch 'refactoring-user-manager-writer' into refactoring-for-unit-tests

Conflicts:
	src/core/Claroline/CoreBundle/Library/Workspace/Creator.php
	src/core/Claroline/CoreBundle/Manager/RoleManager.php
	src/core/Claroline/CoreBundle/Resources/config/repositories.yml
	src/core/Claroline/CoreBundle/Writer/RoleWriter.php
Merge branch 'refactoring-for-unit-tests' of https://github.com/claroline/Claroline into refactoring-for-unit-tests