[Wish List] Append 'Open Editor...' to Log

https://bugs.launchpad.net/vesuvius/+bug/1264030

Another way to approach this is adding:
$global['xajax_res']->addAppend('rezLog','innerHTML','Opening
Editor...<br>');
to the functions rez_perform_edit and rez_perform_translate. I think the
committed way is better.