[Observium] New Community Edition 0.15.6

New Community Edition version 0.15.06 released based on SVN revision 6430. 430 new commits since the previous release.

http://www.observium.org/wiki/Upgrading#Upgrade_to_latest_Major_release

http://www.observium.org/observium-community-0.15.6.tar.gz

Thanks, adam.