Backup Manager - 2.2.0

• Email logic changed
  • The email-sending logic has been updated with two additional checks:
    • If the same error (same payload and application version) has already been reported, the email is not sent again.
    • A minimum waiting period (configurable, default 7 days) must pass between two critical error emails.
  • An email is sent only if:
    • The error has not already been reported for the current version, and
    • The configured minimum time has passed since the last critical error email.
• Some code refactoring