Added option to make favorite groups public

db/migrate/20171219001521_add_is_public_to_favorite_groups.rb

@@ -0,0 +1,7 @@
+class AddIsPublicToFavoriteGroups < ActiveRecord::Migration
+  def change
+    FavoriteGroup.without_timeout do
+      add_column :favorite_groups, :is_public, :boolean, default: false, null: false
+    end
+  end
+end