Increase poi buffer and select correct name_en from place

layers/poi/poi.yaml

@@ -3,7 +3,7 @@ layer:
   description: |
       [Points of interests](http://wiki.openstreetmap.org/wiki/Points_of_interest) containing
       a of a variety of OpenStreetMap tags. Mostly contains amenities, sport, shop and tourist POIs.
-  buffer_size: 8
+  buffer_size: 64
   srs: +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over
   fields:
     name: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the POI.