Added one line in module view
Removed small error
Small validation bugfix in negotiation feedback view
Small changes
First two marksheets implemented, not tested yet
Rewrote all marksheets, now easier to change and more or less PEP 8 compliant
Small bugfix to export/views
Cleared up feedback/views.py
Brought database.models in line with PEP8 (sort of)
Corrected database app for PEP8 compliance
Made announcer app PEP8 compliant
Tidied up anonymous marking and marking