Minor changes

A little work on future Py3 compatibility (for whenever python-daemon
gets around to getting ported)
Capitalize heading

To match all the other chapters
Fix #18

It's not perfect, but it'll do for now. In particular several GUI
operations are compound operations so the progress dialog flickers in
and out of existence rapidly. Still, at least the infrastructure is now
there for something better when I've got time in future.