Major Update
Major Update.2 Chrome working on Windows and Mac

This update contains a few updates to the comments
in the files, but is otherwise identical to the previous
commit, which erroneously contained no detailed
description.
The main differences from the commit before last are:
The project now uses Chris Wilson's WebMIDIAPI.js
literally. It has no longer been adapted in any way. This
should make future code chages easier. My file
JazzWebMIDIAPI.js has been deleted.
The project is now working in Chrome on both Mac
and Windows computers. Other browsers have not
been tested. Input devices have not been tested on the
Mac.