add splitIntoDirectories to folder es

Author: pofider

lib/reporter.js

@@ -792,7 +792,8 @@ function addFolderEntity (reporter) {
 
   reporter.documentStore.registerEntitySet('folders', {
     entityType: 'jsreport.FolderType',
-    humanReadableKey: 'shortid'
+    humanReadableKey: 'shortid',
+    splitIntoDirectories: true
   })
 
   reporter.documentStore.registerComplexType('FolderRefType', {