back out r7439 (#9298)
test_date_and_time_for_each_language at unit/lib/redmine/i18n_test.rb fails.
Slovenian translation of trunk r5957 and 1.2-stable r7434 updated.
Contributed by Nejc Vidmar.
Authored by: tmaruyama 2011-09-22
Parent: [r7449]
Child: [r7451]
