Requirements
------------
  lighttpd
  polyml (other ML systems untested)
Quick setup
-----------
*  install lighttpd if necessary
   (and optionally disable automatic startup on default www port)
Quick instructions
------------------
* start the server with:
    isabelle wwwfind start
  (add -l for logging from ML)
* connect (by default) on port 8000:
    http://localhost:8000/isabelle/find_theorems
* test with the echo server:
    http://localhost:8000/isabelle/echo
* check the status with:
    isabelle wwwfind status
* stop the server with:
    isabelle wwwfind stop