django-registration replacement

- remove django-registration references
- integrate with django-allauth
- move all registration stuff to separated app
- update unit tests
registration with email verification:
- rebuild login view
- check email verification in LoginSerializer depends on allauth settings
- add test for registration with email verification
veirfy email view and test
typo
revised user details view
fix tests for djnago 1.5
remove unused serializers.py form registration app
cleanup tests
add django 1.7 and python 3.4 to travis.yml
fix tests for django 1.7
update travis config file
create base view and serializer for social authentication
password reset and password change refactoring
remove unused utils.py
add social medial authentication tests, separate test urls
comment out unused part of code in tests
custom serializers settings
fix setting name
minor fixes
move django-allauth and responses from setup.py to test_requirements.pip