* Some easy to replace "q" calls have been replaced by "DBA" calls
* Simplified the GUID creation
* And one in the API ...
* And OStatus has got some DBA calls more
* Just some more replaced database calls
* The event query is now simplified
* Events are now shown again
* subthread is now using the DBA calls as well
* Some more replaced database calls
* And some more replaced database calls and prevented notices
* Better use gravity
* Some more replaced database stuff
* Some more replaced database calls in DFRN.php
* The gcontact class now has got the new DBA functions as well
* The Contact class is now changed to new database functions as well
* Small correction
* We can now delete without cascade
* One more functionality is safe for future changes
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