OpenSource GroupWare v0.2.7

Finally after several months on hiatus then a month or two of hacking away at O a new release is finally here. With a completely rewritten Calendar, that now properly support recurring events along with new features like the ability to share Calendar events (as well as items from other services) with other users in the same groups.

Many bugs have been fixed as well. Including some that have been plaguing O for some time. From a developer perspective a lot of code has been cleaned up, and the MySQL class can now handle multiple queries at the same time.