Changed up abilities to only include guest and admin
Fully functioning authentication, authorization, and user management.
alphabetized unregistered student list, added users to nav bar.
Started refactoring instances of reg_order[0]
Contuing to replace reg_order with current scope throughout code.
Finalized refactoring of reg_order in all instances. Fixed pagination bug in eligible student list and increased display size from 5 per page to 10.
Merge pull request #142 from dyurkans/cancan

Cancan