Add protection against a null LocalSiteProfile.permissions.
Review Request #4955 — Created Nov. 15, 2013 and submitted
Add protection against a null LocalSiteProfile.permissions.
It appears that it's possible a LocalSiteProfile.permissions to be None,
and in this case, permission lookups will fail. We're now more careful
about this, and default it to {} when processing.
Unit tests passed.
Tested manually with hard-coding None.
