Update dependencies

 - Update Django==1.7.1, gunicorn==19.1.1 and MySQL-python==1.2.5
 - Adapt Procfile to start gunicorn
 - Add gunicorn config
 - Add TEST_RUNNER due to Django 1.7.1
 - Add staticfiles urlpatterns
Merge pull request #2 from TooAngel/master

Update dependencies