More static views and a better finalisation mechanism

.gitignore

core/migrations/0027_submissiontype_description.py

core/migrations/0028_auto_20170314_1726.py

core/migrations/0029_feedback_empty.py

core/migrations/0030_auto_20170315_1444.py

core/migrations/0031_auto_20170315_1603.py

core/migrations/0032_auto_20170315_1609.py

core/models.py

core/static/lib/js/tether.min.js

core/static/res/brand.png

core/static/res/favicon.png

core/templates/base.html

core/templates/core/feedback_form.html

core/templates/core/feedback_static.html

core/templates/core/reviewer_startpage.html

core/templates/core/student_startpage.html

core/templates/core/submission_view.html

core/templates/core/tutor_startpage.html

core/urls.py

core/views.py