Migrations fixed
Merge pull request #12 from instructure/user_tests

Student and teacher account type tests.
Migrations fixed
MERGE RAWR
Merge pull request #13 from instructure/fix_migrations

Migrations fixed
add valid attributes to controller spec
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remove files
Merge pull request #15 from instructure/DeletedDateFromNotebook

YAY THE DATE WENT BYE BYE
remove comments helper spec
notebook comments
update root index
refactor comment views
deleting comments
add valid attributes to controller spec
remove files
remove comments helper spec
merge conflict resolved
db migrate
Merge pull request #14 from instructure/course_controller

Course controller valid attributes