Fixed checkboxes saving invalid values.
Added a window size change easter egg.
Added minimum width setting for subviews - regionmap, table, scene, preview and dialogue.  It should be noted that the setting is not the starting minimum width, i.e. it won't be possible to reduce the width of the subview after the creation.  Also, one setting applies to all subviews.  It may be desirable to have individual settings.
Re-implemented subview minimum size setting.
Use reasonable values for the spinbox.