#15 added Alpha Channel in the constructor of the retirieved BufferedImage
#15 changed the map of the wk_fg report. the map consists now of a background and an overlay
#15 if there are more than one Bewirtschaftungsenden for a Teil, use the first one and print a warning
#15 removed typo in report
#15 added text in report if aggregierter Lawa-Typ is empty
#15 changed return type of getBeansFromQuery() from Collection to ArrayList