Bug 12929: Restore behavior before bug 12716

This patch remove borrowernumber from the borrower list fields and
display the field list in the notes.

Test plan:
- verify that the list of fields is displayed on the right (Notes).
- verify the borrowernumber is not displayed anymore in the field list.

Signed-off-by: Petter Goksoyr Asen <boutrosboutrosboutros@gmail.com>

Confirmed that this patch removes borrowernumber from list of default
values, and reintroduces missing list of CSV columns in the Notes field.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Bug 12929 [QA Followup] - Hide borrownumber from sample csv file

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Works as described, hides the borrowernumber from the list
of fields to edit and also brings back the list of fields
for the sample file in the documentation.

Passes tests and QA script.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>