wayland: Launch daemon as WaylandClient

[leolost2605]

On wayland launches the daemon as a wayland client. For testing this disables the autostart in the desktop file.
It will now position the menus correctly.

Todo (in this branch or follow up PRs):

• Menus don't close on outside clicks. (Push modal with the WindowActor makes it not receive any inputs itself.)
• Find a way to launch daemon on X only. Alternatively we can also launch it ourselves.
• Probably remove the session stuff from the daemon?

[leolost2605]

#1844