Fix makefile issues for anatomy.htm
* Should be four backslashes, not five
* When generating anatomy.htm, sed would convert any pipe to a backtick
  This caused pipes in Haskell data declarations to be converted to
  backticks. I changed the regex to replace |.*?| to `$1`. I used
  perl -pe instead of sed because apparently sed doesn't support
  non-greedy expressions.
* VERTICAL_BAR transforms into || instead of a single |
Also added two files to .gitignore and make clean