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)
To me, it still sounds like two different things. On one hand reading before is something that "only" happens "almost always" and that you could want to stub by other method than creating a chroot. On the other hand, it's optional since, as mentioned, there are situations in which you really want the write to happen.

So to me, it sounds like two different tools than will be used together often, but should be also provided on their own.