CLD-79 - Minor update to Cloud Admin Node Browser to show "Source Associations"

- follow-on to clear "sourceAssocs" when setting new nodeRef

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@137132 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/admin/AdminNodeBrowseBean.java

@@ -267,6 +267,7 @@ public class AdminNodeBrowseBean implements Serializable
         properties = null;
         children = null;
         assocs = null;
+        sourceAssocs = null;
         inheritPermissions = null;
         permissions = null;
         permissionMasks = null;