uuid URL path converter failed if UUID is anything but lowercase

[Jean-Daniel]

According to RFC4122:

Each field is treated as an integer and has its value printed as a zero-filled hexadecimal digit string with the most significant digit first.
The hexadecimal values "a" through "f" are output as lower case characters and are case insensitive on input.

Actually, when trying to parse uuid using the url dispatcher's "uuid path convert", it returns URL not found for anything but lower case UUID, which is surprising as they should be case insensitive.

The uuid path converter should be updated to support upper, lower or even mixed case UUID, as long as they are properly formatted.