fix elfinder server api 2.1 directory upload bug

elfinder/connector.py

@@ -526,7 +526,6 @@ def _upload(self, target, FILES, html=False, upload_path=False):
         directly, the :meth:`elfinder.connector.ElfinderConnector.execute`
         method must be used.
         """
-
         if isinstance(html, basestring):
             html = int(html)
 
@@ -576,7 +575,7 @@ def _upload(self, target, FILES, html=False, upload_path=False):
                     try:
                         #if upload files number exceed 1 it will cause a weird bug,the connector can't find the target directory.
                         #This function will caused another bug,if the upload directory file name contains dot will cause the file upload to the wrong directory. 
-                        if len(all_[item]) >=1:
+                        if len(all_[item]) >=1 and isinstance(upload_path,list) and target not in upload_path:
                             file_ = volume.upload(files[file_index], new_target)
                         else:
                             file_ = volume.upload(files[file_index], target)#This is a weird bug