Silly question. Can we do away with the calendar widget entirely by setting
"type=date" on the input and use the browser native calendar?

If I can get this to work, it would fix:

  issue2551124 - localize calendar
  issue2550527 - calendar styles buggy (left margin)
  issue2550935 - Calendar popup does not show current value of date field.
                 Shows original value.

and partly addresses:

  issue2551260 - Replace classhelp/calendar frame system

This fix is literally 12 characters.

Anybody got any ideas/thoughts here?