Feature: Backup Persistent Storage to make Clones

[BenWestgate]

https://tails.net/doc/persistent_storage/backup/index.en.html

Previously Bails had custom code to create backup USBs without a restart. That code was submitted to Tails and now Tails offers the same functionality making it redundant.

The new tool provided Tails needs to be tested so that I can guide and remind users to make backups of their Bails USB to preserve their wallet meta data and blockchain.

As well as to make clones.

[BenWestgate]

• Backup Tails walkthru (similar to setup Persistent Storage guidance)
• SIMPLE Reminder system for backups (the old ones are unnecessarily complex)
• Clone Tails walkthru (includes shell commands to prevent private data from copying unencrypted to the Friend's USB stick.)
• Clone Tails autostart (Introduce Bails to the new user on their first Run)
• Recovery Tool to get your encrypted wallet back from a friend's Cloned Bails USB. Ideally initiated by the friend

[BenWestgate]

Since a regular reminder system will be added by Tails this summer, lets only remind them to backup when they have reached 100% IBD and have not yet made a backup. This should persist restarts until a backup is successful.