In connection with this year's LibreOffice conference (see http://conference.libreoffice.org) in Aarhus, we'll be organizing what AFAIK is the first LibreOffice hackfest in Denmark in the local hackerspace:
https://wiki.documentfoundation.org/Hackfest/Aarhus2015
Do put your name on if you're planning to participate!
Apologies if this is off-topic, but I think the conference & the hackfest might be interesting to many LibreOffice and other free software users/programmers out there.
Best Carsten