Add version parameter to use cache-busting for sao files
It's a common technique to use cache-busting to able the user to have the most recently updated files without having to perform a hard refresh or clear their browser cache. We could have it at least for:
dist/tryton-sao.min.js?v=6.2.1
dist/tryton-sao.min.css?v=6.2.1
I also propose to include on all bower_components as normally when you use a CDN source the version is included on the link, so if developer change version it change also for the user the url. But with our setup the link is always the same path (E.g. src="bower_components/jquery/dist/jquery.min.js"
)