Fixes #6186.  Added keydown handler for IE and safari to make sure ESC key fires keypress and is stoppable.
Fixes #6186.  Added keydown handler for IE and safari to make sure ESC key fires keypress and is stoppable.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@13759 560b804f-0ae3-0310-86f3-f6aa0a117693

harbalk/delite,kitsonk/delite,kitsonk/delite,Sam-Cummins/delite,Sam-Cummins/delite,harbalk/delite