Produce HTML 5 <output> for <xf:output>

[ebruchez]

See:

https://html.spec.whatwg.org/multipage/forms.html#the-output-element

Is it safe to use it even with older browsers who don't recognize it, when simply using it as:

<output name="my-output">some value</output>

if we don't use the JavaScript interface (.value, in particular)? I seems from the spec that the element was designed for graceful degradation this way.

If we do this, then we can use <label for="my-output">, which we don't do now.