Placeholder text can coexist with input text

[tschmal]

If the widget has placeholder text:

(1) User types in stuff but doesn't accept a value or create a token.
(2) User clicks away from the widget.
(3) Widget now shows both the placeholder text and the input text. Looks bad.

Suggested fix:

On the click away, check not only for the existence of tokens when determining whether to show the placeholder, but also for input text.