_Widget.ondijitclick test

This tests dijit's infrastructure for catching SPACE and ENTER key clicks on nodes that aren't <button> or <a>, and therefore don't normally respond to keyboard "click events".

Clicking the first widget moves focus to the plain button, but that button itself shouldn't get a click event. (There are some subtleties about whether catch clicks on key-down or key-up so this tests to make sure we are doing the right one.)

click me using space or enter, to focus button below
click me using space or enter, to focus textarea below