[UP-4071]  Add BROWSE permission to all groups listed in the portlet-def...

...inition.xml file.

https://issues.jasig.org/browse/UP-4071
Should the xsd be updated to v4.1 to note the change?  Since it would be a pain updating all portlet definitions to refer to the new version and it is a backwards-compatible change I can see reasonably sticking with 4.0.  I'm inclined to stick with 4.0 but I thought I'd ask since it would be more clear (couldn't take an "update" 4.0 portlet definition to an older "pre-update" 4.0 system).