Can now apply saved display profiles by
right-clicking on the Desktop Background and
selecting the display profile that you want to
use. It will run <HeliosPlus> ChangeProfile <uuid>
where <HeliosPlus> is the HeliosPlus binary and
<uuid> is the UUID of the relevant display profile.
Moving to using a ProfileRespository will make it
easier when moving to a WPF style app, and it will
allow some freedom if I want to change the storage
to a database or soemthing different.
