when a message send fails, the promise returned by `sendMessage` is
rejected. Until we switched to bluebird, the rejection was happily being
swallowed, but with bluebird, there's a better chance of the unhandled
rejection being caught by the runtime and mocha and failing the test.
Automated replacement of utils.failTest with nodeify
This was done with the perl incantation:
```
find spec -name '*.js' |
xargs perl -i -pe 's/catch\((testUtils|utils).failTest\).done\(done\)/nodeify(done)/'
```
more auto
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'.
If an exception was thrown by the encryption process, the event would be
queued, but the exception would not be handled. This meant that the event got
stuck as a grey 'sending' event in the UI.
Fixing this correctly is slightly more complex than just handling the exception
correctly. A naive approach would mean that the event would be shown as a red
'unsent' message, and clicking 'resend' would then send the message *in the
clear*. Hence, move the encryption to _sendEvent, where it will be called again
when the event is resent.
