Remove filltmpl command from setup.py. Was only used for
sonar-project-properties and we are removing it.

For a more robust process detection use psutil library to check if the
process exists and if it's a rdiff-backup process.

To allow easy installation on Debian Wheezy. Downgrade the Babel version
required.

Add tox configuration file to test with various python and cherrypy
version. Also add integration to stup.py.

To make it work for python2 and 3, bump babel version required.

To make rdiffweb work without `lessc` make it optional during build.

Delete all Grunt related files: Gruntfile.js, package.json
Replace Grunt call by a customer script in setup.py calling directly
lessc. Also move main.css files to static.

Make the integration test (java/web tests) working in python2.