issue2550774: Fix generating the website documentation - the COPYING.txt file needs to be symlinked into website/www/ so the documentation can be generated correctly - add website/www/COPYING.txt to the .hgignore file so the symlinked version does not get accidentally committed to the repository - the website documentation Makefile 'clean' removes the symlinks and the generated html to return things back to the original state, which is what should happen on a 'clean'

Docs
====

.. toctree::
   :maxdepth: 2

   docs/features
   docs/installation
   docs/upgrading
   docs/FAQ
   docs/user_guide
   docs/customizing
   docs/admin_guide
   docs/xmlrpc
   Design (original) <docs/design>
   docs/developers
   docs/tracker_templates
   docs/acknowledgements
   docs/license