Work on services
make services a core module
Merge branch 'master' of https://github.com/GeoNode/geonode into zip_remote
Add ESRI-leaflet plugin, use lazy loading for layers
Fix layer lookup
Assign bounds of cascaded layers
Set bbox to 4326 or web mercator depending on layer srid
A few other bug fixes
Merge branch 'master' of https://github.com/GeoNode/geonode into services_gn
Fix the form on the create group template.  Fixes #1525.
Merge branch 'master' of https://github.com/GeoNode/geonode into services_gn
Merge pull request #1532 from mbertrand/services_gn

Services as core module
New assets.min.js including esri-leaflet
Merge pull request #1534 from mbertrand/services_gn

Updated assets.min.js to include esri-leaflet plugin
Merge branch 'master' of https://github.com/GeoNode/geonode into guardian

Conflicts:
	geonode/context_processors.py
	geonode/layers/models.py
	geonode/layers/templates/layers/layer_detail.html
	geonode/layers/templates/layers/layer_leaflet_map.html
	geonode/layers/views.py
	geonode/services/fixtures/initial_data.json
	geonode/services/models.py
	geonode/services/templates/services/service_register.html
	geonode/services/views.py
	geonode/settings.py
	geonode/urls.py