Added stats export for skill badges
Finished simple analytics export
Merge branch 'develop' of https://github.com/Solerni-R1-1/CoreBundle into feature/stats
Added 404 exceptions when workspaces have no mooc in stats export
Merge branch 'develop' of https://github.com/Solerni-R1-1/CoreBundle into feature/stats
Merge branch 'feature/stats' into develop