traGtor 0.8.23: new 2-pass features and bug fixes

Version 0.8.23:
* Added function to split user options for first and second pass
* Added new editor window for user options (optimized for 2 passes)
* Added option to skip audio encoding in the first pass of two
* 2-pass togglebutton uses toggle event instead of click (used to switch
  no audio togglebutton in sensitivity)
* Added second command line editor to confirmation window for 2 passes
* Added new crop and scale type (w:h:x:y)
* Version is read from version file
* Bug in createProgress(): try to destroy window before creating a new one
  (progress window 1 of 2 passes didn't piss off and rejected removal via
  the optional close button)
* Bug in presetFormat(): convert values to string before regexing against
  True/False (backward compatibility for new option 'no audio')
* Changed regex in presetFormat to check for more chars as string