added missing i18n() that destroyed special handling for inbox/outbox/.. for non-english languages
added missing i18n() that destroyed special handling
for inbox/outbox/.. for non-english languages

svn path=/trunk/kdenetwork/kmail/; revision=53722

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi