Cloud backup improvements

[ben-kaufman]

• The user shouldn't be prompted to enter a password every time they click backup, if a password is set the user should have somewhere an option to change the password (maybe in a settings page), but it should not ask the user to enter a password every time.
• Should reconsider whether to use BSMS in the PDF, it may be better to store a normal descriptor, or store an actual .bsms
• Healthcheck doesn't check much, only that files exists and accessible and how many there are. Also not much info is shown on healtcheck success/ failure, making it less useful. We could show a toast with more info for now.

[ben-kaufman]

@AreejKhalid21 we could use here a design update with the make the backup now button popup say this will save the backup to your cloud (ie. some general explanation), and have an option to change password, but it should by default just continue with the saved password.

[cakesoft-utkarsh]

If the app does auto-backup, check if this activity is added to the history timeline.