Update Alice, Where Art Thou by AscherJ to 2.19.15

This is a large complex piece and I hope I did it justice. The finished product looks good but these issues remain:
 - Many Ottava brackets collide with stems and slurs; my attempts to fix this generally looked worse.
 - 4 compiler warnings regarding tuplet brackets. This is typically a problem with cross-staff tuplets. I fixed several but, because the warning doesn't provide a line number, I was unable (too tired?) to find the errant location.

Closes issue #509