Update the cduce repo to contain a Makefile and up to date files to create the website

@kn If you can take a look at make @website, it's raising a warning:

File "site.cd", line 427, characters 5-2453:
Warning: The capture variable right is declared in the pattern but not used in the body of this branch. It might be a misspelled or undeclared type or name (if it isn't, use _ instead).