* OEM config ID
 * WiFi password step
 * Full Disk Encryption passphrase
 * Geolocation Step
 * Keyboard Step
 * User Info

Currently we ask for keyboard layout as late as possible, such that installation is already running in parallel.
If one boots into a customized locale, one cannot switch to an English locale for certain inputs.

This brings the following bugs:

 * Wrong locale/cannot change locale on OEM ID ( http://pad.lv/290421 )
 * Wrong locale/cannot change locale on the WiFi step ( http://pad.lv/871752 )
 * Full Disk Encryption passphrase locale != boot time locale ( http://pad.lv/1047384 )
 * Geolocation cannot be type in Latin (~ish) locale ( http://pad.lv/630990 ) ( http://pad.lv/1055124 )
 * Cannot change locale at user info step ( http://pad.lv/511956 )

There are possibly other subtle bugs like that.