Add domain names as 'id' for regions.
Instead of general-purpose utils create specifically tailored utils.

Generalizing utils makes them more complex, requires developing general
command-line user interface.  But there are no reasons for this additional
work.

--HG--
rename : topojson_edit_data/topojson_edit_data => topojson_edit/add_regions_data
Merge cities with special status with surrounding regions.

Earlier such cities were just omitted, but it creates holes and incomplete
topology for corresponding regions.
Clean up topojson_edit_data remains.
Add localized Ukrainian names for regions.
Add link to examples.

Yes, there are only two measly examples but it's still important to provide
some.