If you check the web.xml file, you'll see that there are many references to jboss, including the listener.
The portlet was written 6 months ago which probably means it was written for Liferay 6.0.x. This means it's written for earlier JBoss version and may not work with version of JBoss included in Liferay 6.1 bundle.
The simple solution to use this portlet is to use Liferay 6.0.x JBoss bundle. If you want to use 6.1.0, you'll have to do your own debugging.