- Update version to 4.4.8.3
* Fix list all symlink files include broken symlink by QDirIterator
with QDir::System
* Fix can not restore trash files if target file is exist
* Fix can not move the invalid symlink to trash
* Fix check dock rect failed
* Fix can not close computer property dialog by CloseAllDialogIndicator
* Fix the copy file dialog position is wrong when close
* Prohibit file names from beginning or ending with spaces