Add housenumber and housename labels

References:
https://github.com/makinacorpus/osm-nmd/tree/master/osm-bright
http://stackoverflow.com/questions/20685006/map-wont-show-building-numbers-tilemill-osm
http://switch2osm.org/serving-tiles/manually-building-a-tile-server-14-04/
https://github.com/gravitystorm/openstreetmap-carto
  (osm.xml)