[bp/r52341][FIX]Tracker field descriptions weren't parsed when used out of PluginTracker even if field checkbox was set or that. Closes bug5431.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52342 b456876b-0849-0410-b77d-98878d47e9d5