remove login required for map and check for correct layer permissions
add a property to maplayer to return the layer title.
show layer title in not downloadable layers in map download
return the name in case of remote layer
use the correct url to copy the map
add csrf token
use typename to avoid conflicts with same name and different workspace
Merge pull request #732 from simod/issue-669

fix #669
Merge pull request #731 from simod/issue-670

fix #670
Merge pull request #730 from simod/issue-728

Fix #728, need review
Merge branch 'master' of github.com:GeoNode/geonode into dev
Merge branch 'dev' of github.com:GeoNode/geonode into dev