Occasionally some code (e.g. live-reload) would try to clear a timer that was set up before fake timers were installed. That would lead to issues and warnings. Enabling `shouldClearNativeTimers` option fixes it.
Commit 68497bddf2 implemented a function
to format durations in a medium format, similar to how durationTiny did.
The existent translation strings do not cover all cases and this commit
adds the missing translation strings.
Previously only `<div>one top element</div>` was allowed because we use `firstChild` instead of `children`.
We also want `<div>one</div><div>two</div>` to work with this method.
I also took the opportunity with this commit to move some test specific
stuff out of `discourse-loader` which is loaded on the front end of the
application. The test module building now happens in the `test_helper`
bundle.
We used many global functions to handle tests when they should be
imported like other libraries in our application. This also gets us
closer to the way Ember CLI prefers our tests to be laid out.
This is where they should be as far as ember is concerned. Note this is
a huge commit and we should be really careful everything continues to
work properly.
