89ced198 added some code which flagged our own device list as in need of an
update. However, 8d502743 then added code such that we invalidate *all* members
of e2e rooms on the first initialsync - which should include ourselves. We can
therefore remove the redundant special-case, which mostly serves to simplify
the tests.
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`
