Update to anki-2.0.4 (based on work from Christophe Fergeau <cfergeau@redhat.com>)
    
    - Update license to AGPLv3+
    - Update noupdate patch
    - Add man page
    - Add post/postun scripts (needed for MimeType key in anki.desktop and for
      /usr/share/mime/packages/anki.xml)
    - Spec file cleanup