Add devise and cancan, generate default devise config
Set up devise config, pepper uses ENV now
Update README and travis config to show new ENV var
Generate devise user model
Add devise views, login to navbar, staging env
Adds belongs_to assoc for incidents to user
Add devise test helpers to make tests pass
Support ordering by users
Fix travis ENV settings
Add anonymous warning, show user ownership on incidents
Mention test todo
Set up mailer info for heroku/staging env
Merge pull request #25 from f3ndot/issue-5-add-devise-and-roles

Add user accounts to system. Fixes #5