Revert "Merge pull request #27 from ProjTutoreAppIOSLorraine/gael_modif"

This reverts commit 7c9c9095c5ca03e4064110f8aabb324d042992de, reversing
changes made to 0269582b86d28aaa2fbb2f8af2e26bed57947314.
Merge pull request #28 from kerautret/revert_pull_request_1

Revert "Merge pull request #27 from ProjTutoreAppIOSLorraine/gael_modif"