The missing cannot_verify_required_email template!

close #1042

resources/static/dialog/views/cannot_verify_required_email.ejs

+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+
+  <h2 id="cannotVerifyRequiredEmail"><%= format(gettext('Cannot verify %s'), [email]) %></h2>
+
+  <p>
+    <%= format(gettext('%s is a required address, but we cannot verify that you own this address.'), [email]) %>
+  </p>
+
+