Qrcode sorting

I fixed a few minor things in the sorting script. With these changes we could scan and sort the pdfs quite easily. Our qr code looked as follows: acs-bs20-123456-1

.gitignore

@@ -3,5 +3,6 @@ pdfs_watermarked/*
 pdfs_encrypted/*
 
 !/**/.gitkeep
-
 .vscode
+pdfs/renamed
+pdfs/sorted