manufacturer and the recogniced GroupDAV client as product name.
This way we are able to handle different GroupDAV clients, as we
allready do with different SyncML clients.
Also removed the no longer needed code enabling the use of the real UID,
as SyncML does no longer misuse the UID for it's GUID.
- new GroupDAV v2 component-set attribute for collections
- getlastmodified & getcontentlength properties for infolog propfind
- fixed propfind on a single infolog entry to return just that entry
- getcontenttype of vevent and vtodo collection returns extra component
