Bug 33343: Catch more cases and correctly use new-password hint

Bug 33343: Catch more cases and correctly use new-password hint

I believe where we're allowing a user to set a new password instead of
using autocomplete="off" we should be hinting to the brownser that it's
a new password box with autocompelte="new-password".

I also correct a couple of missing instances.. Honestly, I'm not sure
how much this helps these days as most browsers offer to save passwords
regardless.

See: https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/autocomplete
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>