Convert DLG_DATABASE_WIZARD dialog to .ui

Change-Id: I18bc001be01b526d4005eacc324b7d2fb82830a0
Reviewed-on: https://gerrit.libreoffice.org/10602
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>