Merge pull request #90 from claroline/refatoring-for-unit-test-nico

Refatoring for unit test nico
Merge pull request #91 from claroline/refatoring-for-unit-test-nico

Refactoring ResourcePropertiesController.
Added an object manager decorator
Merge pull request #93 from claroline/refactoring-for-unit-tests-stefk

Added an object manager decorator
Using the new ObjectManager (part 1)