updated meta files, removed windows clutter,..

I changed the readme and license a little, so that played nice with the
heading conventions I'd started using on the assignment documents
(largest headers are h2s).

I also deleted some Excel lock file I didn't know had been added. Oh
Windows.

I have primarily worked on index.php, improving the include mechanism,
and have started to understand the following saying: a programmer may
encounter a problem and think "this could be solved with regular
expression", but then they'd just end up with two problems.

The technical documentation document (42.3) has been changed as part of
the changes to the including business.