modify InfoPanel in Applet class
added Button whcih stays invisible
added Link Button (visible when rescaling window)
added actionListeners
added getSource for Actions
added F-Neighbor Button and function Stumbs for button actions
getting the star and printing it out
colore a star wich seems random
colore the correct star
colore the star of ALL marked vertices
finished the link coloring
added functionality of F-Neighbor