add Invoice approach & parent comment

modules/axelor-open-suite/axelor-account/build.gradle

@@ -14,7 +14,7 @@ axelor {
 
 dependencies {
 	compile project(":modules:axelor-base")
-
+	compile project(":modules:axelor-purchase")
 	compile 'xalan:xalan:2.7.2'
 
 	compile group: 'jdom', name: 'jdom', version: '1.1'

modules/axelor-open-suite/axelor-account/src/main/resources/domains/ImportationFolder.xml

@@ -7,5 +7,6 @@
   <entity name="ImportationFolder" lang="java">
    	<many-to-one name="paymentMode" ref="com.axelor.apps.account.db.PaymentMode" title="Payment mode"/>
     <many-to-one name="paymentCondition" ref="com.axelor.apps.account.db.PaymentCondition" title="Payment condition"/>
+    <one-to-many name="invoices" ref="com.axelor.apps.account.db.Invoice" title="Importation Folder" mappedBy="importationFolder" />
   </entity>
 </domain-models>