[NEW] The rest of the Tiki Addons feature (for now).


git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52519 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] Better reporting and profiles cleanup on addon removal


git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52520 b456876b-0849-0410-b77d-98878d47e9d5