Also fixes some resize issues with stupid workarounds to our resize
logic. This really needs to be cleaned up at some point!

Limiting improves readability on wide monitors.

The immediate update of the settings is done by just exposing settings
as properties and then setting the settings as a context property.

Can't do it for QtWidgets code. We need to fully transition, before we
can fully switch over probably.

Thanks to red_sky for the feedback!