Fixes for MOB-836 and MOB-766 and MA-96.
Add the ability for course staff to specify a Survey and make it required so that a student must fill it out before starting the course
Merge pull request #5799 from edx/hotfix_candidate/2014-10-30

Merging Hotfix candidate/2014 10 30 as per release process
Merge pull request #5818 from edx/release

Merging latest updates to release