relax SVN archive

Clean up and expansion of the question() dialog box showing method.

A docstring and comments have been added. And the arg default added to allow yes or no to be the
default button.

A close box is added to the relaxGUI main window as requested by Edward d'Auvergne.

The original post is https://mail.gna.org/public/relax-devel/2010-02/msg00025.html. This patch
corresponds to file #7925 (http://gna.org/support/download.php?file_id=7925).

A keyword for window decoration was added.

The about windows now stay above all others!

Variable name fix.

Sent some initialisations into __init__() to occur before the Bind() calls.

This will fix some intermittent errors.

The cursor type now changes to a hand when hovering above the link in the relax about widget :)

This involves binding all mouse actions (wx.EVT_MOUSE_EVENTS) to the cursor_style() method.

Removed a debugging print statement.

The init keyword arg is now accepted by offset().

This allows the offset to be reset each time the widget is created and shown.

Added a base class method process_click() which simply closes the widget.

This makes the relax GUI about widget happy.

Made the link to the relax website clickable.

This involves changing the close() method to process_click(), determining the (x, y) coords of the
click (in event.GetX() and event.GetY()), opening the link if the correct position is clicked (the
link position coordinates are stored), and closing the widget.