Replace urlencoded chars with unicode equivalent

Otherwise we get value errors while marking since pwb replaces those

Related Task: [FS#160](https://fs.golderweb.de/index.php?do=details&task_id=160)

lib/redfam.py

@@ -28,6 +28,7 @@ Provides classes for working with RedFams
 import hashlib
 import locale
 import re
+import urllib.parse
 from datetime import datetime
 
 import mwparserfromhell as mwparser  # noqa
@@ -291,6 +292,9 @@ class RedFamParser( RedFam ):
             # Make sure first letter is uppercase
             article = article[0].upper() + article[1:]
 
+            # Unquote possible url encoded special chars
+            article = urllib.parse.unquote( article )
+
             # Split in title and anchor part
             article = article.split("#", 1)
             # Replace underscores in title with spaces