Apparently _HasDropDown was just including _Widget to pull in the focus manager?   Changed it to use _FocusMixin.  Refs #12366 !strict.
Apparently _HasDropDown was just including _Widget to pull in the focus manager?   Changed it to use _FocusMixin.  Refs #12366 !strict.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@24481 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful