9.0.0

CHANGES:
DirectoryScanner.java
* revised the way that FileDesignation is called, it can only be called
now by DirectoryScanner when FDD is turned off
* fixed the notification errors
FileDuplicationDetectionScanner.java
* when FDD is turned on, FD Scan will be called from this context,
otherwise, DirectoryScanner will call it.
* Fixed the notification errors
FileDesignationScanner.java
* Fully implemented the File Designation function
* still on test phase
SQLiteHelper.java
* Added some comments on update method
AndroidUtils.java
* added new method cutPasteFile, which is used by file designation.