Created Issue: Html.EditorFor helper generates wrong date/time format [630]

In MVC applications, if someone uses the Html.EditorFor helper to generate UI for a model that includes a DateTime field, the resulting HTML markup will render a date in a culture format that doesn't resemble the one prescribed by the HTML 5 standard, which references RFC 3339.

To fix this, we need to change our generated markup to use one of the formats prescribed in the RFC.