This bar is called the shared layout.
You can edit it's permissions inside portal.war!/WEB-INF/conf/portal/portal/sharedlayout.xml
I found it before reading your reply. Regardless, thanks.
See also the Jira, for the location of the sharedlayout.xml file.
JBoss Portal and GateIn (JSR-286), JSF, Richfaces, J2EE, Drools, BRMS.