Use input type="date" instead of a custom input for date that doesn't work with l10n

[bohwaz]

I'm French and the date form doesn't make any sense:

Is this September 11, or November 9? Not sure as our local date format is "dd/mm/yyyy".

This form should just use a <input type="date" /> as it will trigger a native date picker and will display the correct date format according to the users locale.