Comment 15 for bug 1850473

Stephanie and I discussed on IRC to defer the remaining accessibility rule violations to a future ticket, to get these in.

Thanks, Stephanie! I've signed off on your changes, rebased, and I think this is ready for more review (and hopefully a merge before it goes stale).

To exercise this new configuration, you can do something like the following:

1. cd to the eg2 directory and run `ng lint`
2. Confirm that it says that everything's fine
3. Add a problem. For example, you could add to src/app/app.module.ts the following line:

var cat = "tuxedo cat";

4. Run `ng lint` again.
5. Confirm that it is complaining, and advising you to use "const" or "let" instead of "var".