Still fixing variable names.

---------------------------

There is a small problem with the templates, as in the course list has dollar signs appearing after the substitution cause it doesn't use Template from string. There is a mismatch of hashes with the multiplication problems.
Merge branch 'master' of https://github.com/ejetzer/cloning-webwork

* 'master' of https://github.com/ejetzer/cloning-webwork:
  Still fixing variable names.