Added video settings for:
- White balance
- Bug fix: Allow webcam video to show on the 'Get Ready' screen
- Bug fix: Prevent graphical interference along bottom edge of the screen caused by the Windows taskbar
- Bug fix: Prevent program crash when selecting certain fonts in the Screen Designer, such as 'Brush Script MT'
- Bug fix: Replacement instruction wording was being chopped at the first ',' (comma) character
- Bug fix: Improvements made to the automatic Event screen resizing function which occurs when the System screen resolution is altered.