Fasttracker II clone v2.23

• Fixed: If the "WAV exporting" screen was open, the "Render individual tracks" checkbox would have a much taller clickable area than it should, which could interfere with for example moving sample loops in the sample editor screen or interacting with the pattern editor
• Fixed: Several of the functions in Smp. Ed. -> Effects didn't set the "song is modified" flag
• Fixed: When zapping the song, the Disk Op. module filename wasn't reset
• The Zap dialog's text was maybe a bit unclear.
  Changed from "Total devastation of the..." to "What do you want to clear?".
  Also changed the "All" button to "Everything".