a few fixes

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49080 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Activity stream category perms not reflecting till next indexing

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49081 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Activity stream and possible other object category perms not reflecting till next index update (Thanks LP)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49082 b456876b-0849-0410-b77d-98878d47e9d5