This allows us to get rid of our custom GtkBuilder loading

This allows us to get rid of our custom GtkBuilder loading

This will make referencing them simpler

We needed to update the README anyway

This is better suited by a run script

Modernize the files that need updating for that.

We still have

    [screenshot] width was too small
    [screenshot] height was too small

as found by

    http://hughsient.no-ip.org/validate.php

but the app is indeed that small.

so pylint doesn't grock on it

since it changes from time to time. Use an URL instead.