Add formastic-bootstrap gem instead of simple form
Config formastic-bootstrap form
Add sanitize parameters to devise
Add name attribute to user table
Use formastic-bootstrap syntax for form
Add bootstrap to js
Add redirection after sign up action to fill demographic fields
Prepare User controller for nested form
Add validation for City
Add validation for user. It also check if any of associated objects are unique
Switch from simple_form to formtastic-bootstrap
Add demographic form partial
Add render partial (demographic form)
Change syntax to haml
Add navigation for layout
Add navigation partial
Add root path
Add factory for City
Add factory for User
Add validation tests for city