 - Tom Gross, itconsense@gmail.com Author
 - Danny Bloemendaal, some portions of code taken from the
   ATReferenceBrowserWidget implementation
 - Alexander Limi, limi@plone.org for improved UI
 - Carsten Senger, senger@rehfisch.de, improve usability
 - Mathieu Le Marec - Pasquet, template fix
 - Thomas Desvenan, thomasdesvenain@gmail.com - fixes and minor features
 - Peter Holzer, hpeter@agitator.com - query update/fix