Releasing CLC 5.7.0 - #83

Changed pages include:

• 404.html - view
• home/index.html - view
• tutorials/index.html - view
• cloud/accept-invitation.html - view
• cloud/add-kafka-mapping.html - view
• cloud/add-postgres-mapping.html - view
• cloud/add-users.html - view
• cloud/authorize-connections.html - view
• cloud/backup-and-restore.html - view
• cloud/change-password.html - view

There are more changes not included in the list