[Live-demo] Update OSGeo-Live Project Overviews and Quickstarts

[Hamish]

Cameron:
> A summary of changes for all projects, from one OSGeo-Live
> release to another would be useful for a press release, but
> I suggest it would require a significant amount of work to
> compile, and as such I'd be wary of committing to it.

note that Angelos has been informally maintaining the CHANGES.txt
file in the main ~/gisvm directory, so if anyone is interested
they can look there.


regards,
Hamish