TODO

• Add ability to login/logout with Locomotive::ContentType models that have _user set to true.
• Expose flash messages to templates
• Expose logged in user in templates
• Isolate across sites
• Add tests for flash messages and template views
• Add ability to specify user access to page templates
• Require that user-enabled content types have an email field that is required.
• Add a toggle option for setting a content type to be user-enabled.
• Show all fields in the sign up form (plus password)
• Clean up route helpers
• Logout other users when you login as a new user
• Remove manual creation of warden mappings in after save of ContentEntry
• On already signed in, redirect home