If `kind` is not in the list then it probably wont get proper `reverse` so it has to have fallback `"/%s/" % kind`. I didn't know if and when you'll pull this code into origin repo and if you define some other kind I still want that to work. Looking to it now it would be better to write:

    try:
        url = reverse(kind+"_base") 
    except NoReverseMatch:
        url = "/%s/" % kind