#4561: Specified program's mimeData

- Bug still exists, but in different way, and it can't be fully fixed
(tried on Windows):
- When drag'n'dropping from textView to notepad, it doesn't copy
anything (since notepad look for urls in mimedata and tries to open
them)
- You can normally copy text by Ctrl+C or context menu and paste
anywhere you wish
- When dragging to winword it copies text (OK)
- Also now our program provides dragging files/dirs from/to other
programs which support Internet Standard