Go Home link needs to redirect to a valid URL

[francovenica]

Description

When the internet goes down the page shows a page with a "Ho home" link, but that links is not taking to a valid URL , that it might end up showing an nginx error

Environment

• Browser: any
• Environment:
  • production (rinkeby) (But mostly reproduced in any PR build)

Steps to reproduce

1. Try to access the gnosis app with no internet
2. The Error page will show up
3. Click the Go home button

Expected result

It should try to take to the base URL /app

Obtained result

takes to the base URL with no /app, so an nginx error is displayed

Screenshots

[katspaugh]

Labelling is minor as this is only a problem on PR deployments.