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

...inition.xml file.

https://issues.jasig.org/browse/UP-4071
Neat. I should have a Pull Request up shortly that makes `BROWSE` permission a lot more useful by enforcing it in more places (related Marketplace entries, search results) so that it will become more interesting to set this permission in these portlet-definitions.