add panels, still using absolute paths
add abbot framework for gui testing, add floorPanel, add ElevatorPanel, add TestImage unit test for FloorPanel
add getter and setter for elevatorStatus and moveStatus in FloorPanel
documentation added to FloorPanel,
RadioButtons removed and fancy images added instead,
add images for floor up and down button,
changed absolut path in buildpath, added test files
added unit tests for floorpanel
FloorPanel changed in class diagram, minor changes in ElevatorPanel
add interfaces for ElevatorPanel and FloorPanel, basic functionality added in ElevatorPanel, interfaces added to class diagramm
add unit tests for ElevatorPanel, implement some extra methods in ElevatorPanel
update Unit Tests:

 *) delete unused unit test TestImages
 *) add unit tests for floorPanel
Merge branch 'gui'

Conflicts:
	classes.uxf