Fixed rp_mergename crashing.

Seems like my poc snippet somehow slipped in. I've added (commented out) code for special naming (assuming two name parts) and "special pools" (i.e. a list of names that does not follow the usual "first name - last name" order). The JSON is not compatible to what I've posted on discourse, but the changes are minimal.
The official name is 'rp_mergename', not names.