Some improvements to IE file upload
Make public S3 uploads by default on server uploads
Show info about exercise expiration to students in review
Translations for assignment expiration
Improve the usage of the compress tag in the application
Added filters and fields to EvaluationCriteria Admin page
Merge branch 'feature-peerreview' of github.com:OpenMOOC/moocng into feature-peerreview
Added filter to PeerReviewAssignment to Admin page
Improve the mark calculation
Move translations from MOOC.trans to javascript gettext catalog
Merge from feature-peerreview branch