Bug 11611: Rephrase description and examples of 5 MARC related sysprefs

This patch rephrases the description or examples of 5 sysprefs:
1/ MARCAuthorityControlField008: "MARC" -> "MARC21"
2/ itemcallnumber: "Examples" -> "Examples (for MARC21 records)"
3/ DefaultLanguageField008: "Range 35-37" -> "Range 35-37 of MARC21 records"
4/ MARCOrgCode: "new MARC records" -> "new MARC21 records"
5/ UNIMARCAuthorityField100 description: "Do NOT include the date
   (position 00-05)." -> "position 08-35. Do NOT include the date
   (position 00-07)."

It also adds description in SQL systempreferences table for
UNIMARCAuthorityField100, MARCAuthorityControlField008 and MARCOrgCode.

Test plan:
- Apply and run updatedatabase.pl
- Check the changes are taken into account in syspref administration
  page
- Check the changes are taken into account in systempreferences table
  (for UNIMARCAuthorityField100, MARCAuthorityControlField008 and
   MARCOrgCode)

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>
(cherry picked from commit 68a7f7f4456078b1b9dc6fd1ba16f11ba45267fc)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Bug 11611: DBRev 3.14.06.002

Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Bug 11087: Make the Pay Fines tab the default tab

Since paying fines is the most likely action when clicking on
the Fines tab, the pay fines tab should be the default rather
than the account summary.

http://bugs.koha-community.org/show_bug.cgi?id=11087
Signed-off-by: Holger Meißner <h.meissner.82@web.de>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Verified by accessing the fines pages from the various
patron account pages.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 65ae7a950de83b7bc9e741d0cc31a79d4797c579)