Bug 10861: Add a check on cardnumber length

Some libraries would like to add a check on the cardnumber length.
This patch adds the ability to restrict the cardnumber to a specific
length (strictly equal to XX, or length > XX or min < length < max).
This restriction is checked on inserting/updating a patron or on importing
patrons.

This patch adds:
- 1 new syspref CardnumberLength. 2 formats: a number or a range
  (xx,yy).

- 1 new unit test file t/Members/checkcardnumber.t for the
C4::Members::checkcardnumber routine.

Test plan:
1/ Fill the pref CardnumberLength with '5,8'
2/ Create a new patron with an invalid cardnumber (123456789)
3/ Check that you cannot save
4/ With Firebug, replace the pattern attribute value (for the cardnumber
input) with ".{5,10}"
5/ You are allowed to save but an error occurred.
6/ Try the same steps for update.
7/ Go to the import borrowers tool.
8/ Play with the import borrowers tool. We must test add/update patrons
and the "record matching" field (cardnumber or a uniq patron attribute)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Tested adding, updating; importing and ran unit test.
Preliminary QA comments on Bugzilla

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10861: (follow-up) for typo in patrons.pref

I'd rather have a comma than a coma :)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>

Then again, if the cookies are really, really good, a cookie-induced
coma would not be the worst thing.
Bug 10861: (follow-up) various refactoring

This patch refactors the previous code and moves the logic from the pl
to a new routine.

Same test plan as previous patch.

/!\ new unit test filename.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>

Bug 10861: Reintroduced the cardnumber length check (client side)

Previous patches has removed the pattern attribute of the input, it was
not needed. This patch reintroduces it. It will only work for new
browser version.

Moreover, it manages with the ',XX' format (see UT).

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Squashed the last two follow-ups. The pattern test did not work fully for me
in Firefox 26 (very recent). But I see the message when I clear the field.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10861: (follow-up) Clarify preference description

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10861: DBrev 3.15.00.023

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10861: (follow-up) use minlength/maxlength rather than pattern for client-side validation

This patch replaces use of the HTML5 pattern attribute with minlength
and maxlength, which is compatible with the jQuery validation plugin
and which, in Chrome 33.0.1750.146 at least, works better.

To test:

[1] Enter a new patron record or edit an existing one.
[2] Verify that the minimum and/or maximum length requirements
    set by the CardnumberLength syspref are validated and that
    form submission is prevented if the cardnumber doesn't
    meet the length requirements.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 108661: (follow-up) enshrine letting CardnumberLength specify just a maximum

This patch finishes the work started in one of the previous
follow-ups and allows CardnumberLength to be set to a value
like ',5'.  In conjunction with not including cardnumber in
BorrowerMandatoryField, this allows a cardnumber to not be
required but, if present, to not exceed the specified length.

This patch also updates t/db_dependent/Members.t so that
it runs in a transaction, tests the new return value
of checkcardnumber, and manages the CardnumberLength syspref.

To test:

[1] Verify that prove -v t/db_dependent/Members.t and
    prove -v t/Members/cardnumber.t pass.
[2] Set CardnumberLength to ",5" and take cardnubmer out of
    the BorrowerMandatoryField list.
[3] Verify that you can save a patron record without a cardnumber,
    but if you supply one, that it can be at most 5 characters long.
[4] Add cardnumber back to BorrowerMandatoryField.  This time, the
    minimum length is 1 even though CardnumberLength is ",5".

Signed-off-by: Galen Charlton <gmc@esilibrary.com>