* Make npm run build run npm compile (it needs the output)
 * Switch to ESlint so we can actually use ES6 without the linter
   crying.

To allow things we've been OK about previously

and make everything errors, so now you can do local builds with
lint failures, but CI will fail and you can't release.

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'.

Turn off / tweak some options from it. Fix a double-definition.
Add an eslint config to the spec directory to tell it about the
jasmine magic globals.