Determine the user's FAS username and store it in flask.g
Force people to register before submitting proposals (fixes #16)
Add admin support for rejecting proposals (fixes #12)
Merge branch 'internationalization' into internationalization-echevemaster

Conflicts:
	wsgi/config_default.py
	wsgi/templates/proposals.html

merge with internationalization
Fix pep8 violations and some new strings not marked for translations
Minor changes in no_proposals
Minor changes in no_registration
Minor changes in proposals