[NEW] Tracker Item Link preSelectFieldMethod: crossSelect
Makes it possible to select from the matched items in the remote tracker.
Requires that the preselect here & there itemIds are filled out.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@46955 b456876b-0849-0410-b77d-98878d47e9d5