remove the files on layer delete.
remove the ng directive in profile detail fixes #1744
fix flake8
fix flake8
Merge branch 'master' of https://github.com/simod/geonode

Conflicts:
	geonode/layers/models.py
avoid on load date query trigger
bump angular to 1.3.0 and leaflet-directive to 0.7.9
Merge pull request #1745 from simod/master

remove the files on layer delete.