Multilinguality (#279)

Improve multilinguality: names in 57 languages, name:latin, name:nonlatin, name_int. Fixes #211 #252 #80.

See #279 for more info.

layers/water/mapping.yaml

@@ -58,6 +58,8 @@ tables:
     - name: name_de
       key: name:de
       type: string
+    - name: tags
+      type: hstore_tags
     - name: natural
       key: natural
       type: string