Adding the hidden next field to the login page so we actually do redirect

mediagoblin/templates/mediagoblin/auth/login.html

@@ -36,5 +36,9 @@
         <td><input type="submit" value="submit" /></td>
       </tr>
     </table>
+
+    {% if next %}
+      <input type="hidden" name="next" value="{{ next }}" />
+    {% endif %}
   </form>
 {% endblock %}