Upgrade Zepto from v1.0rc1 to v1.0, and handle the fallout in subsequent
checkins.
Loosen fakeServer login/logout url match rules to allow for
cache-preventing query parameters on the urls.  We do that by using
match regular expressions which disregard any query parameters.  They
are designed to work whether or not any query parameters are present.

It appears that Zepto 1.0 is surprising us by properly respecting
caching directive, while 1.0rc1 neglected to do so.  This accounts for
that.
Adjust matche expressions for url-encoded strings so that sequences of
spaces are all replaced by "+" signs, rather than just the first one.

My guess is that we were accommodating an url encoding flaw in Zepto 1.0rc1
that only replaced the first of a sequences of spaces with a "+", and we
are now tracking the correct substitution of the entire sequence of
spaces with pluses.