Fixed validations for advert price_type and defaults
Merge branch 'master' of github.com:Supy/studenthub
Added validations and code for field value validation
reject unknown fields
Added seed categories for textbooks
Don't allow values that are too long
Added missing validation
Come on Capistrano. Added secret key for staging environment.
Merge branch 'master' of github.com:Supy/studenthub