Fixbugs
Merge branch 'develop' of https://github.com/Solerni-R1-1/CoreBundle into develop

* 'develop' of https://github.com/Solerni-R1-1/CoreBundle:
  fixbug 403 blank page
  Accessibility to admin page "Moocs" added to ROLE_WS_CREATOR
  fix Design for slider in dashboard when the loading of the page
  Clean previous commit...
  Fix incoherent alert in dragndrop of resource manager