Minor text corrections regarding registration process
Custom registration backend and added date of birth field
formatting for pep8
Stop creating the user profile on a signal

We will add a mandatory date of birth field, so we can only create it on
registration where we have this information available.
explicitly create a user profile in the user factory

We will add a not-null field, which makes get_or_create stop working that easily
Added mandatory date_of_birth field to UserProfiles

This forces us to explicitly create the user profile when the user is created.
Don't let the user register below 15 years
Install test requirements in vagrant
PEP8 compliant, no changes besides formatting
Added a real page to show when the applicant is too young