Update and delete function for GeoIndexer crashes

[somegooser]

The TNTGeoIndexer file crashes when you try to update a document.

The problem is that it calls the delete function before re-inserting the document. The delete function tries to do stuff with doclist and wordlist table which do not exists in the GeoIndexer files.

Summary: GeoIndexer tries to delete from doclist table instead of locations table.

[piolet]

fix with #283