Use firstLogin event to trigger creation of default calendar and default address book
Delay login of admin user after setup so that firstLogin event can properly be processed for the admin
Fixing tests ...
Skeleton files are not copied over -> only 3 cache entries are remaining
Use updateLastLoginTimestamp to properly setup lastLogin value for a test user
This adds the "QUICKDB" group which excludes some tests that abuse unit tests as integration tests as displayed in https://github.com/nextcloud/server/issues/1626
Signed-off-by: Lukas Reschke <lukas@statuscode.ch>