Bug 13970: Remove category_type related code

Bug 13970: Remove category_type related code

Working on bug 13497 and bug 9314, I run into some Koha vestiges.
The category_type parameter should not be passed to memberentry.
On creating a new patron, the categorycode should be passed, and on
editing, it's useless. We can work with the borrowernumber and retrieve
these values.

Details of the changes:
- members-toolbar.inc: Remove the category_type parameter passed to
memberentry.pl
- memberentrygen.tt: Just remove the useless category_type parameter on
  editing a patron. Also remove the unused one passed to
  guarantor_search.pl.
- tables/members_results.tt: the borrowernumber is enough to edit a
  patron.
- memberentry.pl: check_categorytype is never used in the template, all
  the process to calculate/retrieve it is unnecessary.
- members/nl-search.tt: The borrowernumber is enough to edit a patron.

Test plan:
Try to create and edit patrons and verify that
- the guarantor search still work
- the form (memberentry) behave as before

Edit a patron from the nl-search.pl script (Magnus?)

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
On top of 9314 (13497 already pushed)

No evident regressions found, add/edit patron works,
search/set guarantor works.

Cant test nl-patron.pl save for exec it.
prove -v t/NorwegianPatronDB.t runs

No koha-qa errors

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>