Adrien Di Mascio <Adrien.DiMascio@logilab.fr> [Thu, 25 Feb 2010 11:39:49 +0100] rev 4697
[web] fix muledit rendering bug
form.cw_col might be None and explicitly passing None to the selector
chain may crash. Most __call__ methods of selectors are defined as in :
def __call__(self, cls, req, rset, row=None, col=0, **kwargs)
and then manipulate col as if it's an integer.