Drop support for User profiles

NC-212
Bump Django version to 1.7

NC-212
Drop South requirement

NC-212
Fix querystring encoding

NC-212
Update permission creation signal handler

NC-212
Drop ordereddict dependency

It is available in Python 2.7 standard library

NC-212
Fixed setup.py test invocation

NC-212
Resort to using dev version of djangosaml2 package

Neither setuptools nor pip do not deal properly
with local version identifiers
(see https://www.python.org/dev/peps/pep-0440/#local-version-identifiers).

See https://mail.python.org/pipermail/distutils-sig/2014-December/025414.html
for more details about how broken Python packaging is.

NC-212
Fix ordereddict imports

NC-212
Merge branch 'develop' into feature/nc-212

Conflicts:
	nodeconductor/core/models.py
Merge branch 'feature/nc-212' into 'develop'

Running on Django 1.7, NC-212