Theme Randomizer Version 2.0

The "Invalid Search String" error will not show up.  Instead
the configuration dialog will be displayed.  There is now
better error checking on the Themes Directory value so that
errors should not occur.

Also added is the choice of whether to display the themes
list in the menu or not.  If you choose not to then there
is a new list box to allow selection of the theme to change
to.

Plus, there is now a command-line option "/cycle". If
included will start TR change the theme based on the
random setting in the configuration dialog, and then
shutdown.