Add geo_location to user_card serializer

Author: angusmcleod

plugin.rb

@@ -93,6 +93,7 @@ class SiteSettings::TypeSupervisor
   register_editable_user_custom_field :geo_location if defined? register_editable_user_custom_field
   register_editable_user_custom_field geo_location: {} if defined? register_editable_user_custom_field
   add_to_serializer(:user, :geo_location, false) { object.custom_fields['geo_location'] }
+  add_to_serializer(:user_card, :geo_location, false) { object.custom_fields['geo_location'] }
 
   require_dependency 'directory_item_serializer'
   class ::DirectoryItemSerializer::UserSerializer