explorer now keeps a list of previously used catalogs
Adding pyc file to .gitignore
First basic implementation of "Publish to GeoNode"
Delete some pyc files that were added to the repo before .gitignore was modified
Specify a layer owner to GeoNode in case we would want it to be different than logged user
Add a geonode box url to the Catalog Dialog
Refactoring to use a geonode class and explorer.run
adapted geonode code to latest changes in geoserver catalog handling

some additional minor changes
documentation update
fixed links in documentation
resized geonode images
added "delete postgis connection" action

minor fix in pg connection editing
Change links in menu
more link changing in docs