Bug 27450: Remove password from the mandatory fields when editing details

When a patron edit their personal details at the OPAC, the password must
be removed from the mandatory fields

Test plan:
0 - Don't apply the patch
1 - Set PatronSelfRegistrationBorrowerMandatoryField to require password
2 - Create or sign in as a patron on the opac
3 - Click 'Your personal details'
4 - Attempt to edit
5 - Save changes
=> They are rejected because not all required fields are populated
6 - Apply the patch
7 - Repeat 3 to 5
=> details are saved successfully
8 - Test the self registration feature and confirm that the password is
required

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 4b2c284092)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 06c47d8f5b)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
(cherry picked from commit af56d2bd59)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>

opac/opac-memberentry.pl

@@ -250,7 +250,7 @@ elsif ( $action eq 'update' ) {
     my %borrower = ParseCgiForBorrower($cgi);
     $borrower{borrowernumber} = $borrowernumber;
 
-    my @empty_mandatory_fields =
+    my @empty_mandatory_fields = grep { $_ ne 'password' } # password is not required when editing personal details
       CheckMandatoryFields( \%borrower, $action );
     my $invalidformfields = CheckForInvalidFields(\%borrower);