Initial work on support for multiple editors

config/example.application.yml

@@ -57,6 +57,8 @@ standard_settings: &standard_settings
   oauth_10_support: true
   # URL of Nominatim instance to use for geocoding
   nominatim_url: "http://nominatim.openstreetmap.org/"
+  # Default editor
+  default_editor: "potlatch"
 
 development:
   <<: *standard_settings