Refs #10038 Fixes the tabbing issue where it is possible to tab onto the SlidingTabControllers control buttons.  These are intended for mouse use only, and should not be possible to tab onto.
Refs #10038
Fixes the tabbing issue where it is possible to tab onto the SlidingTabControllers control buttons.  These are intended for mouse use only, and should not be possible to tab onto.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@20599 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful