Add support selenium >=4.11 by defining location of chroniumdriver

As recommended, add the .mo file to git as source code.

Pre-configure minify to compile javascript into a .min.js file.

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.

Conflicts:
	setup.cfg
	setup.py

translation too.

build` ref #33 #34

accepted language.