Logs; Add permission is now always available from the business layer

The ability to add Logs is now always available at a business layer level and only restricted from the User Interface.

The following permission keys are now flagged as 'User Interface' only:
Account.Logs.Add
Account.Logs.AddDocument
Client.Logs.Add
Client.Logs.AddDocument
SecurityItem.Logs.Add
SecurityStmt.Logs.Add


The CanSave() methods on all Log objects now has a mandatory 'userInterface' parameter.

This change has been made to allow other processes, e.g., Workflows or external application to create Logs without having to worry about User permissions.