ux: keep topbar at all times

[lidel]

Problem

We have different UI on redirect pages, the main landing page, and error pages:

Landing page (foo.localhost:3000)	Redirect / subdomain landing (http://specs-ipfs-tech.ipns.foo.localhost:3000/)	Error page (http://error-test.ipns.foo.localhost:3000/)

This makes navigation and configuration difficult, especially on mobile / PWA context.

Proposed improvement

Let's unify all three screens to follow the main landing page. Keep the top bar with button that allows editing configuration:

Other improvements:

• Remove "About" section from the "Redirect / subdomain landing" page (top header will be enough)
  • To keep continuity, we should also stop opening pages in new tab (remove target=_blank from here)
• Error page: reuse style from #272

[SgtPooki]

the error page will be the challenging one because the html is served by the service worker. so we could probably set a hash router page something like ipfs-sw-error or fudge in all the CSS and stuff