Added a check for the money.collections_tracker table when using the open-ils.collect...

Added a check for the money.collections_tracker table when using the open-ils.collections.users_of_interest.warning_penalty.retrieve API call.

Users that are already entered into the money.collections_tracker table should not be recalled from the open-ils.collections.users_of_interest.warning_penalty.retrieve API. This change will check for the existance of the user in the money.colletions_tracker table.

Signed-off-by: Steven Callender <stevecallender@esilibrary.com>
Signed-off-by: Bill Erickson <berick@esilibrary.com>