Improve behaviors and styles for the search bar in the navigation bar for all screen sizes.

Tasks:

• Improve all states (passive / active & focus / text entry auto-suggestions / text entry completed) for the search bar following mockups from the design system.
  • include the new SVG icon
  • change font styles
  • add a delete button
  • change style for auto-suggestions
  • make the search bar full width for S & M screens