Added method for triggers to check whether they match all transactions

app/Rules/Triggers/AmountLess.php

@@ -62,4 +62,11 @@ class AmountLess implements TriggerInterface
         return false;
 
     }
+    
+    /**
+     * Checks whether this trigger will match all transactions
+     * For example: amount > 0 or description starts with ''
+     * @return bool
+     */
+    public function matchesAnything() { return false; }    
 }