added conditional validations to userdocs to validate issued and expiration dates
added new paperclip validations
fixed order of validation   has_attached_file
working on tests, added link to gradable subject in gradable items index
fixes to seed file, fixes to versions index, added alerts to pages with seed data as a reminder to update the seeds if data is changed
cleaned up models, standardized validation messages, removed uneeded validation messages
removing pb-xlarge classes
clean up
working on issued ends expiration date
working on issued ends expiration date
fixed date validation syntax error
fixed syntax error in method
added issued endorsement expiration ajax calcualtion
fixed full_errors partial calls using the wrong var
controllers clean up and refactors
revereted flights controller
a lot of refactoring, clean up, fixing some model tests
changed nested routes back to static...that were affecting ajax.
added a gradable items and sceanrios counter to the ajax update...
removed ground nested route...it also broke ajax