Update navigation component to new theming

[bartaz]

Done

Updates top navigation to use new theme.

Fixes WD-7598

QA

• Open demo
• Check if top navigation renders correctly
• Review the examples of navigation component, make sure they work and look the same as on vanillaframework.io, also check mobile version
  • Navigation / Grid
  • Navigation / Dropdown dark
  • Navigation / Search dark
  • Navigation / Sliding with search

Check if PR is ready for release

If this PR contains Vanilla SCSS code changes, it should contain the following changes to make sure it's ready for the release:

• PR should have one of the following labels to automatically categorise it in release notes:
  • Feature 🎁, Breaking Change 💣, Bug 🐛, Documentation 📝, Maintenance 🔨.
• Vanilla version in package.json should be updated relative to the most recent release, following semver convention:
  • if CSS class names are not changed it can be bugfix relesase (x.x.X)
  • if CSS class names are changed/added/removed it should be minor version (x.X.0)
  • see the wiki for more details
• Any changes to component class names (new patterns, variants, removed or added features) should be listed on the what's new page.

[webteam-app]

Demo

Jenkins

demos.haus

[mas-who]

QA looks good, a quick look over the code it seems good but I'd like to have a more detailed code comb through as I don't have the best knowledge for the surrounding context. Please give me a little bit of time.

[britneywwc]

Another big theme refactor! Code looks good :)

[chillkang]

LGTM🎨