[Seaside] Class Variable Browser Fix

[Sven Van Caekenberghe]

On 14 Jul 2011, at 09:56, Ted Wrinch wrote:

> by using '&' instead of the older 'and:'

Ted, beware, these are not equivalent !

	& always evaluates its argument
	and: only evaluates its argument when necessary ('short circuit boolean evalution').

Sven