Added polymorphic columns to comments
Fixed specs
Removed comments from users
Updated approver_comments
Cleanup tests and bad migration
Adding a cart item comment through web interface
Send an email to approval group members when a cart item comment has been created
Re-commented out letter_opener in dev
Fixed mailer issue when creating a comment
Added specs to CommunicartMailer#comment_added_email
Added specs for checking comments added to users
Merge pull request #21 from 18F/polymorphic_comments

Polymorphic comments
I like it.