better integrating for Fib nodes

better integrating of Fib objects into Fib nodes

The cFibNodeHandler::integrateFibObjectIntoNode() method integrate just
needed parts and creates an event that contains the information just about
the changed parts.

Drawing mode added

Drawing mode added. If in drawing mode the selected Fib (info) object will
be included (if psooible) at the mouse position in the graphic screen, when
a mouse click occures.

- Some icons added
- some actions from main window removed
- some bugfixes