Create skeleton for User class (for creating new Users)
Add create user page
Add method to return list of countries in User model
Implement create method in Users controller
Better implement users.index view
Add username validation even if form error has occured earlier when creating user
Merge branch 'createUser' into develop
Modify create user page (views/user/index..) to match new html structure (since merge)
Redo create user method not to check for username errors if previous form error exist (caused crash)