Bug 15343 [QA Followup] - Fix issues

Bug 15343 [QA Followup] - Fix issues

1) "Contact information" should be "Password"
2) Don't pass sysprefs from the script to the template, use Koha.Preference()
3) minPasswordLength is optional, we cannot always assume it is set
4) Password field when does not follow convention completely when mandatory

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jesse Weaver <jweaver@bywatersolutions.com>
Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com