move keymap to initial language selection

No menu-entry at all needed like that. Keymap and consolefont variation depending on language and screensize information is collected when launching the installer.

    :: manjaro-architect-exp 0.7.4.r428.gf747a99-1 ::

03/13/17 16:07:14 system: UEFI, init: systemd nw-client: nmtui 
03/13/17 16:07:29 loadkeys de 
03/13/17 16:07:29 set font ter-116n 
03/13/17 16:07:41 set LANG=en_US.UTF-8