sortable table ascending and descending
Merge branch 'master' of https://github.com/claroline/CoreBundle into ergonomy

Conflicts:
	Controller/AdministrationController.php
	Resources/views/Administration/Users/list.html.twig
	Resources/views/Tool/workspace/roles/workspaceGroups.html.twig
erge conflict
Merge pull request #447 from easy-es/ergonomy

sortable table ascending and descending