Revert "ECMS-6113: Encode non-latin characters (Vietnamese, Chinese, Japanese)"

This reverts commit 54261701daaad3b3e17e487a4c823e9142096b24.
Revert "ECMS-6113: [IE8, 9] Weird encoding of file name with accent characters"

This reverts commit acf2f9c49e6a3c89e56094e69a84198746317504.
ECMS-6113: [IE8, 9] Weird encoding of file name with accent characters

Problem analysis:
- In IE, file name is encoded twice time. The first time, the file name is encoded before saving file list and the twice during upload progress.

Fix description:
- Decode file name in IE when saving list file to upload

Conflicts:
	core/connector/src/main/java/org/exoplatform/wcm/connector/FileUploadHandler.java