[FIX] editable: Error: "Method Tiki_Render_Editable::__toString() must return a string value" (not null)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@45022 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] modules: User module files don't exists

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@45023 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] sefurl: Trackers list was getting converted to 'tracker0', should be 'trackers'

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@45024 b456876b-0849-0410-b77d-98878d47e9d5