Update to in-progress page

The removes (rm) have been completed and are currently in the archive.

rm completed Carcassi O26 project (glenl)
add Giuliani O38 (glenl)
rm completed Bach duets for keyboard BWV 802,804,805) (Gillis)
rm completed Bach's Chromatic Fantasy and Fugue (BWV 903) (Louis)
rm completed Bach's "Prelude in D Minor" (BWV 999) (Bagterp)