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'.
When we got a redaction event, we were adding the entire (circular) MatrixEvent
object for the redaction to the redacted event, which would then cause
exceptions down the line (particularly when dealing with gappy timelines).
We should only be adding the raw event.
Fixes (hopefully) https://github.com/vector-im/vector-web/issues/1389.
