SAK-13205 Portfolios (OSP) permission settings

OSP was turned off by default in Sakai 10 and removed entirely in Sakai 11.

SAK-13205 - Getting issue details... STATUS : if you are upgrading from a pre-2.5.0 version of Sakai, then you need to force conversion of the OSP permissions by setting osp.upgrade25=true in your sakai.properties file. (See also discussion.)