WPMU DEV - Snapshot Pro 4.21.1

- Fix: Exporting doesn't respect the NULL in table schema
- Improve: Add option to cover S3-compatible storage destinations
- Fix: Managed backups restoration fails when reaching the usermeta table
- Fix: Issues at media when restoring a regular snapshot in a different site
- Fix: Deal with RIPS issues
- Improve: Change the icon for local backups on Dashboard managed backup listing
- Improve: Change the tooltip to equal padding
- Fix: Offset option not showing for Weekly / Monthly Schedule at new backup page
- Improvement: Remove activation tooltips
- Fix: Managed backup restore is failing if previously there was a regular snapshot restore
- Fix: Issue with Managed backup Frequency options

Fix: Files not cleaned up after restore with Snapshots
Fix: Issue with restoring WooCommerce tables with Snapshots

Improve: Disable local backups email triggering and update the copy
Improve: Handle gracefully incompatibilities with the new AWS SDK
Fix: Change icon for automated backups that failed to upload
Fix: Import snapshot from directory URL and see size showing 0
Fix: Dropbox Import showing error