Fix our url converters to not be silly

app.py

@@ -128,15 +128,16 @@ app.request_class = RequestWithId
 # Register custom converters.
 class RegexConverter(BaseConverter):
   """ Converter for handling custom regular expression patterns in paths. """
-  def __init__(self, url_map, *items):
+  def __init__(self, url_map, regex_value):
     super(RegexConverter, self).__init__(url_map)
-    self.regex = items[0]
+    self.regex = regex_value
+
 
 class RepositoryPathConverter(BaseConverter):
   """ Converter for handling repository paths. Handles both library and non-library paths (if
       configured).
   """
-  def __init__(self, url_map, *items):
+  def __init__(self, url_map):
     super(RepositoryPathConverter, self).__init__(url_map)
     self.weight = 200
 
@@ -150,7 +151,7 @@ class RepositoryPathConverter(BaseConverter):
 class APIRepositoryPathConverter(BaseConverter):
   """ Converter for handling repository paths. Does not handle library paths.
   """
-  def __init__(self, url_map, *items):
+  def __init__(self, url_map):
     super(APIRepositoryPathConverter, self).__init__(url_map)
     self.weight = 200
     self.regex = r'([^/]+/[^/]+)'