Basic devise install
Added devise user model
Updated student/instructor associations to reference User model
Added first name and last name to user
Made fname and lname accessible
Updated seeds to use User
Added instructors scope
Instructor column in users defaults to false
Deleted instructor model
Deleted login model
Deleted login routes
Added to_s to be full name
Changed current_instructor hlper mmethod
Added authenticate user before filter
Replaced references to current student or instructor to use current user
Deleted login controller
Deleted login helper, moved current pair helper to app helper
Removed instructors controller
Merge branch 'master' of github.com:appacademy/GetHelp into devise
Removed reference to LoginHelper