Splitted course index in 2 separates view (student & admin)
Student can now access restricted view of programs
Fixed typo in choose_catalog view
Added ability for normal user to update_catalog action
Removed useless submodule controller
Catalog modules view doesn't show sub_modules anymore
Deleted useless sub_modules view
Fixed bug in Cousr#show view
Fixed layout bug in Course#show view
Added depndent: :destroy to justification-answers relation
Fixed bug occuring in student_program#show when there is'nt any justification yet