Skipped problematic test on mysql
Ended resource repo tests
Intermediate commit
Group repo tests
Ended tool repo
Merge branch 'refactoring-for-unit-tests' of https://github.com/claroline/Claroline into refactoring-for-unit-tests-stefk

Conflicts:
	src/core/Claroline/CoreBundle/DataFixtures/LoadPlatformRolesData.php
	src/core/Claroline/CoreBundle/Tests/Writer/RoleWriterTest.php