Toolbar style update

[saschaeggi]

Problem/Motivation

Recent interviews and research exposed pain points around Drupal's admin experience of looking and feeling dated.

Proposed resolution

Implement new Toolbar design to create a favorable first impression of Drupal for evaluators and a better user experience for site authors. No functional differences.

Specification

Quick overview

This image is just a quick overview for Navigation list specs. Please use the Figma link to full specification as the main resource for specs.

Full specification

FIGMA: https://www.figma.com/file/OqWgzAluHtsOd5uwm1lubFeH/Design-system?node-id=3324%3A0
This link is anchored to the board with the full specification. As an anonymous user you can see the design, but to actually be able to pick colors and sizes please login on Figma.

User interface changes

No functional differences.

Test Pages
/admin/