Add geonames (not genomes nor gnomes) reconciliation to a Openstreetmaps nominatim sister element

[DiegoPino]

What

http://api.geonames.org/postalCodeSearch?placename=New%20Paltz%20(NY)&maxRows=2&username=YOURUSERNAME based on http://www.geonames.org/export/web-services.html

Basically:
1.- We need a new element quite similar to Open Streetmaps nominatim
2.- A geonames endpoint (this one requires authentication so a form/setting for it)
3.- Add also to both (nominatim and this new one) autocompletes based on LoC Geographic names?
4.- A tiny map?
A simple design.. something slim that matches what the other LoD elements look like

@alliomeria
@jenpalmentiero @senyzspalding watch this one