[nebula-dev] Build and download site changes

[Wim Jongman <wim.jongman@xxxxxxxxx>]

Hi,

removed "proper" from the update site name

moved snapshots to snapshot

promoted ganttchart to release widgets.

changed some bugs and typos on the download site.

The download site is now live. check it out.

http://www.eclipse.org/nebula/

Thanks to all and Special Thanks to Mickael for fixing a lot of difficult stuff (signing and promotion).

Regards,

Wim