Some basic fixes for the transaction controller [skip ci]

app/lib/Firefly/Storage/Piggybank/PiggybankRepositoryInterface.php

@@ -12,9 +12,15 @@ interface PiggybankRepositoryInterface
 {
 
     public function find($piggyBankId);
+
     public function count();
+
     public function store($data);
+
     public function get();
 
     public function updateAmount(\Piggybank $piggyBank, $amount);
+
+    public function update($data);
+
 }