Editing a saved place looks it up again. Where the lookup has a website,
phone, e-mail or opening hours that differ from the place, a New place details
pill in the form's head band shows how many, and opens what the place holds
beside what the lookup has. Empty fields are ticked, filled ones are left to
the person and say they would replace; Take over writes only the ticked
fields, with the provider as their origin, and nothing the lookup does not
know is ever emptied.
The head band's pills move to PlaceFormHeaderPills.tsx, which brings the form
from 1157 to 1002 lines.
Maurice
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