bump pycsw to 1.6.0, atom/dif/fgdc are now default profiles so remove from config
Merge branch 'master' of https://github.com/GeoNode/geonode into css-fixing

# By Tom Kralidis
# Via Tom Kralidis
* 'master' of https://github.com/GeoNode/geonode:
  bump pycsw to 1.6.0, atom/dif/fgdc are now default profiles so remove from config