Fixes #4787: Correct the is of tooltip for n/a rules
Merge pull request #502 from fanf/bug_4787/Bad_tooltip_for_na_rules

Fixes #4787: Correct the is of tooltip for n/a rules
Merge branch 'branches/rudder/2.9' into branches/rudder/2.10
Merge branch 'branches/rudder/2.10'