Added SOGo path resolver
Reworked getDelegatedCollections, it now works fine with CommuniGate Pro 5.3, SOGo, Google Calendar and CalendarServer.
Patch applied. I had some funny conflicts when applying the patch, so if you can please take a look at the changeset to see if I applied it correctly that would be really appreciated.
Here is the link to the changeset:
Look fine here. I'm doing some other changes (adding path resolver for DAViCal and some fixes to getDelegatedCollections), so other patches will come in soon :-)