make it working with django 1.6
initial work towards django 1.6
Allow users create GeoGit repositories with underscores in the name.
Remove apt-get step from the OSX instructions.
Merge branch 'master' of https://github.com/GeoNode/geonode into django1.6

Conflicts:
	geonode/contrib/services/urls.py
	geonode/documents/urls.py
	geonode/documents/views.py
	geonode/layers/urls.py
	geonode/layers/utils.py
	geonode/layers/views.py
	geonode/maps/models.py
	geonode/maps/urls.py
	geonode/maps/views.py
	geonode/people/urls.py
	geonode/proxy/views.py
	geonode/views.py
	setup.py
Update README

Addede python-django and upgraded development instructions for 14.04
Update README

Simplified install instructions in development mode for Ubuntu 14.04
Update pavement.py

pip install geonode is not needed in pavement.py
fix url imports and hashlib for django 1.6
add default value to map layer transparent
fixed proxy tests, thanks @ingenieroariel
add api url
add api url
save the layers even if the was is not available, by @ingenieroariel
ad a wcs links test to integration
update setup.py to geonode django1.6 forks
put a help text for the featured field
Merge branch 'master' of https://github.com/GeoNode/geonode
Merge pull request #1487 from simod/django1.6

Update to django 1.6
Merge branch 'master' of https://github.com/GeoNode/geonode