Minor Description
Add support for PLT.12.5.4 Setting Markup Head Elements.
Changing the EmbeddedPortletHeaderResponse to (in some cases) output Dom elements instead of strings to provide to the portal to put in the <head> section of the portal page.
one of the problems that still exist is (if possible) filtering out double added references. As each Wicket portlet will add a reference to the Wicket javascript files.