Regenerate initrd after configuring keyboard (bnc#888804)

* Some autotranslated code polishing (in a different commit for easier review)
* Update dependency on yast2 >= 3.1.94 (new messages)
actually our style guide mention that unless should be used only in trailing for for simple condition - https://github.com/SUSE/style-guides/blob/master/Ruby.md#if-and-unless-statements part 4