[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.
[MESSAGES CONTROL]
disable-msg = C0301
[VARIABLES]
# Enable / disable this checker
enable-variables = yes
additional-builtins = _, display_name
[BASIC]
required-attributes=
attr-rgx = (w|[a-z_][a-z0-9_]{2,30})
variable-rgx = (w|[a-z_][a-z0-9_]{2,30})$
argument-rgx = (w|[a-z_][a-z0-9_]{2,30})$
[TYPECHECK]
generated-members=debug,info,notice,warning,error,critical,exception