Impress Sprint Dresden updates

Hi there,

just a quick update on $subject - added some more bits and pieces to

https://wiki.documentfoundation.org/Marketing/Events/ImpressSprint2013

, most importantly some rough time table at

https://wiki.documentfoundation.org/Marketing/Events/ImpressSprint2013/Schedule

and a list of talks / project proposal at

https://wiki.documentfoundation.org/Marketing/Events/ImpressSprint2013/Proposals

Your edits on those pages appreciated - please take the talks listed
as offers for input, feel free to add your own pet project (either one
you'd need some mentoring input for, or something you're happy to talk
about)!

I'll follow-up with the listed participants in a minute with more
pointers to resources (build howto, QA pages etc).

Looking forward to see you there,

-- Thorsten