[bp/r52856][ENH] trackers: Add facet provider to ItemLink fields

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52859 b456876b-0849-0410-b77d-98878d47e9d5
[bp/r52857][FIX] shoutbox: Tidy up generally pending ajax restoration coming soon

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52860 b456876b-0849-0410-b77d-98878d47e9d5