mod_invites_register: Fix missing 'from' attribute (thanks Martin) This should probably cause a noisier error in Prosody, than the current > No hosts[from_host] (please report): <stanza> A stack trace would have been useful, for example.

+
−<tr>
+
−  <th>What is {x} {op} {y}?</th><td>
+
−    <input name="captcha_challenge" type="hidden" value="{challenge}">
+
−    <input name="captcha_reply" pattern="[0-9]+" required type="number">
+
−  </td></tr>