[Live-demo] New apps for 6.0

[Alex Mandel]

I know it's a little early but I wanted to make sure I didn't forget.
Here are some apps I think we should consider adding to OSGeo Live 6.0 
and I will do the work to contact the developers of the projects:

1. TileMill http://mapbox.com/tilemill
2. Localwiki http://localwiki.org/
3. GeoDjango (Could be covered with a localwiki install, so 2x docs but 
only one install script) http://geodjango.org/

FYI, localwiki and tilemill both have ubuntu packages, space is likely 
to be the bigger issue.

Thanks,
Alex