Bug 26119: Enable patron's attribute edition when PatronSelfRegistrationVerifyByEmail

Bug 26119: Enable patron's attribute edition when PatronSelfRegistrationVerifyByEmail

There is no good reason remove the ability to edit patron's attributes
if PatronSelfRegistrationVerifyByEmail is set.

We cannot have them in the self-registration form (because we don't
store patron's attributes during self-ref), but we can have them when
a patron show/edit their information.

Test plan:
0. Enable PatronSelfRegistrationVerifyByEmail and create patron's
attributes that can be edited at the OPAC
1. Create a new patron using the self-reg feature
=> You don't have the ability to fill in the patron's attribute
2. Edit your personal details (OPAC)
=> Without this patch you still don't see the patron's attribute that
can be edited at the OPAC
=> With this patch applied you can!
3. Notice the wording change on the "Modify patron attribute type" form
and confirm it makes sense

Signed-off-by: Sally <sally.healey@cheshiresharedservices.gov.uk>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>