Added monetary source into the ledger entry lists. This may be more information than is needed on the listing, but I'll take it out later if so.

git-svn-id: file:///svn-source/pmgr/branches/ledger_transactions_20090605/site@139 97e9348a-65ac-dc4b-aefc-98561f571b83

controllers/ledger_entries_controller.php

@@ -29,8 +29,13 @@ class LedgerEntriesController extends AppController {
     return array
       ('link' =>
        array(// Models
-	     'Transaction' => array('fields' =>
-				    array('Transaction.id', 'Transaction.stamp')),
+	     'Transaction' =>
+	     array('fields' =>
+		   array('Transaction.id', 'Transaction.stamp')),
+
+	     'MonetarySource' =>
+	     array('fields' =>
+		   array('MonetarySource.id', 'MonetarySource.name')),
 	     ),
        );
   }