[mythtv] Changing highlight/button-on settings in themes

[Michael Lynch]

> What's more, all the -ui files are documented, such as:
>
> http://www.mythtv.org/wiki/Schedule-ui.xml#The_.22programfind.22_window
>
> If you have read the core theme documentation thoroughly, understand
> the concepts of each widget, and complete the tutorial, then you will
> be able to use any of these -ui.xml documentation files to complete or
> modify a screen.  Theming is complicated enough that you need to
> understand basic concepts to succeed at it-- to be unwilling to take
> the time to understand all the concepts and then blame the
> documentation when things are non-obvious to you is frustrating to say
> the least.
>
> Robert

Robert, just a public thanks for writing *all* (or at least almost
all) of the new theme documentation.  Without it, I wouldn't have been
able to create my theme.  Good job on it.