Add kde5 repository
Add ux-plasma repository
maui.yaml: Replace Hawaii with future KF5 & Plasma based shell

At the moment we just include sddm from ux-plasma repository.
It requires Xorg because at the moment Wayland is not supported by
Plasma shells.
services-x86-livecd.post: Enable sddm

Enable sddm for live CDs too.
Remove Qt packages we don't use anymore

These are packages either obsolete or available only with Mer/Jolla
copy of Qt.
Add Qt xcb platform plugin
Remove obsolete Qt package
Install accountsservice into all targets
Add hawaii-mw repository
Start with graphical target for all x86 adaptations
maui.yaml: Add oxygen-fonts
x86-common.yaml: Add VMware drivers for all x86 adaptations
Add maui-sddm-themes to all targets
maui.yaml: Remove cjkuni-fonts

Causes fonts to render badly.
maui.yaml: Add avahi
services.post: Enable services for all adaptations

Only avahi for now.
Add comments and echo script name on all post scripts
Move services.post to ChrootScripts
sddm-theme.post: Edit sddm.conf from $INSTALL_ROOT

We were looking for sddm.conf from host root and of course
that's wrong.
Use systemctl to set default target