Adding Sip::Permission

$ rails g Sip::Permission user_id:integer subject_id:integer \
  subject_type:string role:string
Adding permission creation for Header
Merge pull request #4 from jeremyf/adding-rspec-repository-statements

Adding beginnings of assigning Permissions
Initial commit for Sip::EventLog
Adding event logging to header methods
Adding event logging to assigning a citation
Adding event logging to doi methods
Adding tests to form submission return values

It is important that the forms return true on submission