README.md: switch to the shields.io dependency badges theme.
Update dependencies.
Merge pull request #12020 from XhmikosR/package

Update dependencies.
Merge pull request #12019 from XhmikosR/badge

Change david-dm theme to make README badges uniform
docs-assets: concatenate and minify all javascript files.

Also add the "min" suffix for the minified files.
Minify docs CSS too.
Turn advanced optimizations off until it's fixed in clean-css.