Revert removal of longitude column

Author: lenikadali

backend/db/migrate/20170817154145_create_positions.rb

@@ -4,7 +4,7 @@ def change
       t.string :postal_code, null: false
       t.string :location_name, null: false
       t.decimal :latitude, {precision: 10, scale: 7}
-      # t.decimal :longitude, {precision: 10, scale: 7}
+      t.decimal :longitude, {precision: 10, scale: 7}
     end
   end
 end