Add Flask-Debug toolbar

Also, don't bundle and minify assets in dev enviromnet
Use correct config in production
Add migrations with Flask-Migrate
Add Flask-Cache
Add error handlers and templates for 401, 404, and 500
Fix navbar alignment
Less verbose form errors
Add FontAwesome 4.0.3
Fix about view
Rename repo_name -> app_name
Shell access to User
Disable SQLAlchemy echo
Add first_name and last_name