Added region_id to the generated geojson

app/models/event.rb

@@ -89,7 +89,8 @@ class Event < ApplicationRecord
     { type: 'Feature', properties: {
       id: id, name: title, start_time: start_time, end_time: end_time,
       submission_time: submission_time, decision_time: decision_time,
-      place_name: place_name, address: address, city: city, region: region.name,
+      place_name: place_name, address: address, city: city,
+      region: region.name, region_id: region_id,
       tags: tag_list, popupContent: "<a href=\"/events/#{id}\">#{self}</a>"
     }, geometry: { type: 'Point', coordinates: [longitude, latitude] } }
   end