Bug 7436 - Set itemtypes.rentalcharge = 0 in sample data for nb-NO and de-DE

Bug 7436 - Set itemtypes.rentalcharge = 0 in sample data for nb-NO and de-DE

Set the rentalcharge = 0 for sample itemtypes (except Music for nb-NO).

To test:
Run through the web-installer for nb-NO and de-DE, and check that
itemtypes are displayed correctly for each language.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>.
Note: You have to install the language first in order to be able
to select it in the web installer. There was a problem
in the po files for nb-NO that kept all files from being created
correctly. I fixed the po file and did an installation with all sample
files. There is a problem with z3950servers.sql that is not caused
by this patch:
z3950servers.sql
ERROR 1136 (21S01) at line 1: Column count doesn't match value count at row 1

Web installer for de-DE ran without problems on the sample files.

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>