contributed by Eloy0.
… 'cs' locale
This commit completes the commit a4612ff by @hennk Reference: https://github.com/rails/rails/blob/v3.0.7/activemodel/lib/active_model/errors.rb#L251
…on equals "bilion" and quadrillion equals "biliard".
First of all, Norwegian uses ',' as a separator, not '.'. Thus, in Norwegian you would write '3,2' not '3.2' as you do in English. Secondly, in Norwegian both ' ' and '.' can be used as delimiter, however, ' ' is primarily used. Thirdly, according to the SI system the kilo- prefix has a lowercase k, not uppercase K.