Expands the interfaces of backup and restore with arguments for specifying an LDAP connection that can be used to schedule these operations as tasks in addition to the current behavior of operating locally.

- In order to add the LDAP connection arguments I changed the short identifier for the -h/--hash argument of back up to be -A

- BooleanArgument was changed to have an implicit value equal to that of the value of isPresent() and a default value of "false".

- Scheduling an ImportLDIF task now respects the quiet argument and does not print a confirmation message if present.