Merge pull request #399 from karyon/django_1.7_prep

Django 1.7 prep
fix #408: fixes check if user is delegate
Merge pull request #410 from janno42/delegate_bug

fix #408: fixes check if user is delegate
fix #385: link to results for contributors
Merge pull request #409 from janno42/result_bug

fix #385: link to results for contributors
add 'order' field to contributions and add migrations
sort contributions in course_forms for staff and contributors and in student_vote
fix test
fix the cursor when rearranging FAQ-sections, fixes #238
Merge pull request #414 from janno42/fix_238

rearranging FAQ sections gets the right cursor
change tolerance for sortable
prevent "add another" from moving
language updates
enable automatic checking/unchecking of responsible and edit checkboxes also for newly added table rows
prevent deleting responsible contributor
refactor student/views.py::vote. make the ordering of contributors explicit.
make the results respect the contribution ordering
make the tests work with enabled debug toolbar
Merge pull request #413 from janno42/order_contributors

Order contributors
fix KeyError in message when fully reviewing course