Removed migrations from master.

We will release migrations before the 2.1 final.
Merge branch 'master' of github.com:GeoNode/geonode
Pegged setup.py to last working versions of owslib and pycsw
update tests
Now it is possible to edit the profile for current user without passing the username in the url (needed by geonode-user-accounts).
remove unused function
safeguard wkt setter