These tested a transition that occured in February. The tests are very
slow because each test does an uncached download of Meteor 0.7.0.1. We
are unlikely to break the logic that it tests and even if we do, it will
only affect users who haven't touched their apps since February.
This avoids wracking up huge numbers of login tokens for the test
user. It would be nice to have these automatically cleaned up, but this
will do for now.
We've been seeing flakiness on login tests on different internet
connections, so now we can easily bump up the timeout (at the cost of
slowing down test failures).
