[Tilesathome] tah refactor - identical file names

[Matthias Julius]

spaetz <osm at sspaeth.de> writes:

> I will change the zip file naming code to really use
> LAYERNAME_Z_X_Y.zip which is easier (we could add the client_uuid but
> hey it's a feature if several clients render the same tileset that the
> latest would win).

This broke the upload of zip files generated before the update.  It
would have been good to keep the old regex in the uploader as fallback
if the zip filename didn't match the new naming scheme.

Matthias