Feature: Allow staff to change user emails (#7074)

* Admin: Show unconfirmed email address on account page

* Admin: Allow staff to change user email addresses

* ActionLog: On change_email, log current email address and new unconfirmed email address

app/models/admin/action_log.rb

@@ -35,6 +35,11 @@ class Admin::ActionLog < ApplicationRecord
       self.recorded_changes = target.attributes
     when :update, :promote, :demote
       self.recorded_changes = target.previous_changes
+    when :change_email
+      self.recorded_changes = ActiveSupport::HashWithIndifferentAccess.new(
+        email: [target.email, nil],
+        unconfirmed_email: [nil, target.unconfirmed_email]
+      )
     end
   end
 end