support web.xml parsing for portlet env

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10859 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
unused imports

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10860 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c