Before it was not possible to place setting values outside the `General` section.
If the keyboard configuration is an empty set, don't run the setxkbmap service. The default values for all keyboard options are null or empty so long as the state version is set to 19.09 or higher (21.05 being the latest version).
Also remove `CONTRIBUTING.adoc` and `FAQ.adoc` from project root since GitHub knows to pick them up from the docs directory. Fixes #2273
