Merge branch 'rohlfing-master-patch-47363' into 'master'

Bugfix supplements.py

See merge request rwthmoodle/exam-scan!21

supplements.py

@@ -88,7 +88,7 @@ def main(args):
                         help="PDF folder with scanned PDFs. Default: ./pdfs")
     parser.add_argument("-o", "--outfolder", default="./supplements_out",
                         help="Output folder. Default: ./supplements_out")
-    parser.add_argument("-d", "--dry", action='store_false',
+    parser.add_argument("-d", "--dry", action='store_true',
                         help="Flag for dry run")
 
     args = parser.parse_args(args)