Link to main page after successful registration

Someone who registers via the web might also be interested in the web
portal.

Thanks to Jonas and Matthew for feedback on draft commit and help with
whatever this template syntax is.

Also no thanks to git for not actually having draft commits as a concept.
Mercurial is so much nicer to work with.

snikket_web/templates/invite_success.html

@@ -15,6 +15,6 @@
 		{% trans %}Copy address{% endtrans %}
 	{%- endcall -%}
 	<p>{% trans %}You can now set up your legacy XMPP client with the above address and the password you chose during registration.{% endtrans %}</p>
-	<p>{% trans %}You can now safely close this page.{% endtrans %}</p>
+	<p>{% trans login_url=url_for('main.login') %}You can now safely close this page, or log in to the web portal to <a href="{{ login_url }}">manage your account</a>.{% endtrans %}</p>
 </div>
 {% endblock %}