[FIX]Hide from authors the option to rate their own articles and their own comments to wiki pages.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50337 b456876b-0849-0410-b77d-98878d47e9d5
[SEC] installer: Log actions at key points during install.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50339 b456876b-0849-0410-b77d-98878d47e9d5