Create general Backup page that can be linked to from the BitBoxApp

[jstrnbrg]

• Currently the App links to: https://shiftcrypto.ch/backup which redirects to https://guides.shiftcrypto.ch/bitbox01/other/backup-center/
• Instead it should redirect to a new, more general backup page (e.g. https://guides.shiftcrypto.ch/other/backups/ )that contains the following information

BitBox01:

• If you have a BitBox01 see this guide on how to restore.
• If your BitBox01 is broken or lost, use the BitBox01 backup centre to access your wallet.

BitBox02:

• If you have a BitBox02 see this guide on how to restore.
• If your BitBox02 is broken or lost, use the BitBox02 backup recovery tool to access your wallet.

[benma]

Sounds good to me, just BitBox02 at the top ;)

If a new page is too much, I am also happy with redirecting to the BitBox02 restore guide by default, with a small link at the top for bb01 users.