Add created_id on the financial_trxn table

Add created_id on the financial_trxn table. FK to civicrm_contact.id

• new installs
• modify schema on upgrade (existing rows will be NULL)

On insert of financial_trxn rows:

• If authenticated user: set created_id to current user's contact id
• if anonymous: set created_id to same value as contribution.contact_id

Add unit test to verify this behavior.

Adding this field will, among other things, allow CiviCRM to track who created and edited a transaction. This is typically done in an advanced donor management / CRM.