Move secret keys/tokens to settings.yml

* Implemented new method of setting sensitive data (without committing
  to git repo)
* Regenerated some of the secrets (main one to worry about is the devise
  pepper which means any currently active users will need to reset their
  passwords...which doesn't currently work ^^;)
Installing cancan and configuring seeds, etc.

Also created the roles and roles_users tables and updated the models.
Everything should be good to go on cancan
Fixing a few bugs
Unfinished, but need to push so I can leave :)

Working on users_helper.rb
Trying to get the user views working...
Ran bundle update
Removing some things, updating other things
Add symlink for settings.yml to deploy.rb