admins can no longer sign up. only sign in.
blocked off routes forcreating new users. can only sign in
Merge pull request #2 from WyncodeCo/chris

Chris
attempts at authorizing
Merge branch 'diego' of github.com:WyncodeCo/prework into chris
removed authenticate user from home controller
Merge branch 'diego'
changed the tables and added destroy to the concepts view
Created editable orders for concepts
Created editable order for concepts
created collection select for sections and concepts and section ordering
making things pretty, added custom flash errors
Unit Index Styling
Merge branch 'diego' of github.com:WyncodeCo/prework into chris
Fixed Merge