Added field to track users last login (#2367)

db/migrate/20201214232153_add_last_login_to_users.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddLastLoginToUsers < ActiveRecord::Migration[5.2]
+  def change
+    add_column :users, :last_login, :datetime
+  end
+end