Bugfix include.php

Fix limit()-Function.
Postgres Bugfix in zonedelete.php

Update with LIMIT is not vailid in Postgres.
Update zonedelete.php

Add routine to delete zonefile.
Update include.php

Add reason filenotdelete.
Update zonedelete.php
Update zonedelete.php
Merge pull request #1 from basti122303/master

Bug fixed, Add routine to delete zonefile, UPDATE with LIMIT is not valid in Postgres