Bug Fix: Up button not working properly
Improved History and Files dialog
Improvement of Files
Revert "Improvement of Files"

This reverts commit 37abdf6a29befab14ce37bd99eaf5bbf74a90f41.
Improvement of Files-2
Improvement of Files-3
Revert "Revert "Improvement of Files""

This reverts commit e2614f73c68580de4c77b7ada5ed4bc72a81ce01.
Revert "Improvement of Files"

This reverts commit 37abdf6a29befab14ce37bd99eaf5bbf74a90f41.
Improved History and Files dialog-2
Bug Fix:default text box in Preferences dialog box not changing its text after choosing folder.
Bug Fix:FilesDialog works when there is directory is null.