5.6.0

Changes:
* Fixed the bug that the Item Properties shows 'Unknown File' when the
selected item is a Folder
* Separated the Folders sorting and Files sorting, ascending order is
now used.
* Completely removed FolderDialog. Currently, FileDialog now supports
both File and Directory browser/chooser.
* Added 'Open with...' function on Developer Mode Browser, calling
applications currently set to a certain type of file.
* Fixed File Designation Rules and Filter Rules to use the FileDialog
alone, but changes its call parameters to differentiate File Dialog and
Folder Dialog
* Added openFile method in AndroidUtils. The method was taken from:
http://www.androidsnippets.com/open-any-type-of-file-with-default-intent
* Changed the folder icon as well as the file icon.