There are 2 changes in this PR:
1) Add a new environment variable called `DISCOURSE_SKIP_CSS_WATCHER` to disable our stylesheet watcher, and make the `qunit:test` rake task set this variable on the Unicorn/Rails server it spins up to disable our stylesheet watcher when running the tests because it doesn't really need it.
2) Print more Chrome logs (such as network/security errors) to the console.
Over the years we accrued many spelling mistakes in the code base.
This PR attempts to fix spelling mistakes and typos in all areas of the code that are extremely safe to change
- comments
- test descriptions
- other low risk areas
By default our QUnit test runner starts automatically. This is normally
fine but for our `run-qunit.js` script we add a bunch of QUnit events
using `eval` and sometimes those events were added after the tests
already started/finished resulting in a hang.
This adds a new parameter that will cause QUnit not to run
automatically, which the runner uses, then triggers a `start()` when it
knows it's ready.
runAllTests is an async function, so the try/catch block does not help. The function always returns a promise, so we need to use `.catch` to handle errors. Previously, raised errors were ignored, and the process continued running until it timed out.
