themeTester: InlineEditBox/DateTextBox blank on click

[haysmark]

When you open the InlineEditBox? tab in themeTester, you see a DateTextBox? and a TimeTextBox?. Both appear to have values; however, when you click them to edit the value, the boxes go blank instead of containing the expected text.

This is because the themeTester init scripts set these widgets' innerHTML instead of calling attr('value'), effectively wiping out the InlineEditBox? template.

themeTester should really be calling attr instead. If the InlineEditBox? template ever becomes more complicated, this method of setting the text could cause unexpected results.

[Douglas Hays]

(In [16573]) Fixes #8589. Call widget.attr('value',blah) instead of hacking innerHTML