ZP-386 #comment cache logs when user is not yet authenticated and write them to the user log afterwards #time 1h

git-svn-id: http://svn.berlios.de/svnroot/repos/z-push/trunk@1662 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5
ZP-385 #comment deduplicate entries in the user agent history when converting device data #time 20m

git-svn-id: http://svn.berlios.de/svnroot/repos/z-push/trunk@1663 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5