Added a couple of missing migration dependencies.
Removed the project migrations directory, it was there for some reason but it was not used.
Removed this initial_data file as it is already in people/fixtures.
Added the initial migration for the base and documents apps.
Updated migrations for layers and maps apps.
Moved the people initial_data fixtures to the right place.
Merge pull request #855 from capooti/issue-766

This should fix #766 and other migrations problems stuff
Merge branch 'master' of https://github.com/GeoNode/geonode into permissions