Add support for new compoundProblem method
Modify knowlLink to accommodate updated version of knowl.js

Updated knowl.js from the AIM website -- allows HERE doc version of knowls.

I was going to implement this change myself but this version from AIM
beat me to it, does it better -- and it's the standard distributed version.

There are accompanying changes to knowlLink in PGbasicmacros.pl to
accomodate the new version.
Merge branch 'master' into pg2.5.1 -- updating and syncing

Conflicts:
	macros/contextLimitedPolynomial.pl
Add support for new compoundProblem method
Merge remote-tracking branch 'origin/pg2.5.2' into pg2.5.1

Updating to make sure no commits have been lost.
Merge pull request #9 from mgage/pg2.5.1

Pg2.5.1