Didn't this sort of thing used to work? (The spaces are being interpreted as if they're in a URL?)
http://test.dwagn.org/wagn/inclusion_in_link
/name}|add a {_self|name} card on cardtype cards doesn't seem like it would work on cardtypes with a space in their name, but it does.
A "key" view would fix these; seems reasonable for the latter but a bit geeky for the former.
you have to use the "linkname" view if you want a link-friendly name.
respect spaces in inclusions in links+discussed in support tickets
respect spaces in inclusions in links+relevant user stories