TuneUp Version 45

F1 Help speech cleanup:
- Every single-letter command in the F1 command list now has a period after
  the letter so screen readers pronounce it more distinctly.
  Examples: "A.", "M.", "R.", "T."
- The "About TuneUp - version and developer" item was removed from the F1
  command list because About information is already available from the Help
  menu and the F1 entry did not clearly present a keyboard command.
- All Version 44 command behavior is retained.
