Bug 24583: Rewrite mandatory/auth_values to YAML

Bug 24583: Rewrite mandatory/auth_values to YAML

YAML version of mandatory auth_values.

To test:
1) Do a clean install, dump auth_values, reserve.

2) Apply this patch and it's dependencies

3) Do a clean install, dump again and compare
   No differences expected

4) Try translation
  a) Go to misc/translator
  b) create files for a new language
     ./translate create xx-YY
  c) Check new file po/xx-YY-instaler.po
     Verify strings from this file.
  d) Install new language
     ./translate install xx-YY
  e) Try clean install with new files

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>