Add lots of calls to `syncPromise` to cope with the fact that sync responses
are now handled asynchronously, which makes them prone to races otherwise.
Also a quick sanity-check in crypto to make one of the test failures less
cryptic.
Once we switch to bluebird, suddenly a load of timing issues come out of the
woodwork. Basically, we need to try harder when flushing requests. Bump to
matrix-mock-request 1.1.0, which provides `flushAllExpected`, and waits for
requests to arrive when given a `numToFlush`; then use `flushAllExpected` in
various places to make the tests more resilient.
Much of this transformation has been done automatically:
* add expect import to each file
* replace `not.to` with `toNot`
* replace `to[Not]Be{Undefined,Null}` with equivalents
* replace `jasmine.createSpy(...)` with `except.createSpy`, and `andCallFake`
with `andCall`
Also:
* replace `jasmine.createSpyObj` with manual alternatives
* replace `jasmine.Clock` with `lolex`
Remove some we don't care about. Set some other ones we do care
about but don't currently adhere to to warn. Set the max warnings
threshold to the current number of warnings, so we don't introduce
more of them. Fix a bunch of legit lint errors and add exceptions
to various places in the test code that does funny things with
'this'.
