Also, be consistent with Node.js' name.

* make `css` and `js` "super" scripts which will run both main and docs scripts
* make `js-minify` run all js minify tasks
* use parallel in more places

* Variable overrides within the same Sass file can come before or after the default value, but across files they must come first.
* Removed the double :: at the end of the paragraph.
* Fixed usage of overwrite when we mean override.

Overriding the focus outline for links within the dropdown menu
causes accessibility issues for keyboard-only users. This
removes the override, reenabling the browser's default focus
outline.

We need to pass different options and this seems cleaner at this point.

In order for docs.min.js to keeps all comments, we don't pass `compress`.

Solution mentioned by Chris Baswell at https://stackoverflow.com/a/45969088

Since flex-order was renamed to just order, change the subtitle.

I feel like `auto` is missing from the values here and that it should be there. Although it is mentioned below, only a single use case, whereas in other sections it appears with the option to set the left margin of an element to auto, for example.