fixed some problems with svg conversion of bitmaps used for export and sharing
fixed some problems with svg conversion of bitmaps used for export and sharing

walterbender/turtleflags,walterbender/turtleconfusion,walterbender/turtle3D,walterbender/AmazonasTortuga,walterbender/turtleart,walterbender/turtleartmini,AlanJAS/turtleart