Bug 1831689: Adjusting how we update dates on the the view access page

There was a problem where we set up fields with empty date and then
try to add a date to it

Instead we should set up the datepicker with the date so that works
out what type of date it is first so then can handle it correctly

Note: if trying to use format DD/MM/YYYY it will complain that it is a
non-compatible date

behatnotneeded

Change-Id: I401e0812dc2c4189b715033fcf7b745c52425b05
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>