change Social Account_param to mandatory

entity/Social_entity/Social_entity.aod

@@ -26,6 +26,7 @@
       <name>Account_param</name>
       <title>Benutzer</title>
       <expose v="true" />
+      <mandatory v="true" />
       <description>Benutzer</description>
     </entityParameter>
     <entityProvider>