Installs Devise for User authentication.
Resolving merge conflicts.
Adding nav bar links for Devise.
adds content to db:seed file for users
adds the event_suggestion model
creates a controller for event suggestion model
Removing User views cruft. Adding User index view for admin. Adding User show and link to User edit page.
adds an invitation model as the join model between event suggestion and user and includes HMT associations
Merge branch 'master' into stef
Merge branch 'event_suggestion_model' into stef
adds event suggestions to routes file