Update build process, get rid of src/external binaries

WorldMap version 1.0

Final alpha version

Use geonode.org to host GeoNetwork war for build

We had been using the SourceForge mirror network, but the URL scheme
appears to have changed out from under us.

Merge remote-tracking branch 'lucacasagrande/master' into synth

PostGIS, Geoserver 2.1 with GWC, Geonetwork 2.6.3

Last version of worldmap before PostGIS, caching, and new version of …

…Geonetwork

Updated readme, replaced GeoNode with WorldMap where it made sense

Hide "Share Map" link unless user has edit permission

GeoNode is an unstoppable machine