Many fixes and improvements
Implement images
Merge branch 'refs/heads/improve_image_impl'

Conflicts:
	src/SimulierteProzessperipherie.java
	src/periphgeraete/frequenzgenerator/Sinus.java
	src/periphgeraete/sensor/SensorADWandler.java
	src/periphgeraete/sensor/SensorRechnen.java
	src/periphgeraete/sensor/SensorSlider.java
	src/periphgeraete/sensor/SensorTeingabe.java