233 Introduction of the drawing mode feature types
Merge branch 'feature/233_drawing_mode' into dev
#234 Every service should know its geometry type
Merge branch 'feature/234_geometry_type' into dev
#235 Virtual feature attributes should be handled in the feature instead of the attribute table.
Merge branch 'feature/235_virtual_attributes' into dev
working on #236: switch from Toolkit.getImage to ImageIO
Merge branch 'feature/236-switch-imageretrieval-techn-to-ImageIO' of github.com:cismet/cismap-commons into feature/236-switch-imageretrieval-techn-to-ImageIO