Debian packaging cleanup

* Use cleaner rules file from the official Debian package,
  by Ritesh Raj Sarraf <rrs@debian.org> (Thanks!)
* Got rid of explicit handling of python versions Let go of all the pre/post
  inst/rm scripts
* Copyright file cleanup
* Updated author's email address and project homepage
Updated copyright notices to 2014
Documentation cleanup and additions

* Actually package manpage
* Moved README to rewritten Markdown README.md for better github integration