Commander:
- Keyboard events processing clean up
- Directory copying implemented

Events:
- KeyboardEvent gets ALTERNATIVE_* codes
- Environment class gets translateKeyboardEvent() method
  to  generate ALTERNATIVE-* events with pressed control
0.2.3

Minor fixes:
-NewsReaderApp gets content parser
- SQL script gets entries for increate-font-size and decrease-font-size commands
-  NotepadApp no longer adds extra empty line on saving
- Automatic window size for AWT interaction gets additional 5 pixel
- NavigateArea gets copy operation