TSLint is deprecated and not depending on things written by Palantir makes me happy, so this PR switches Navigator over.

Unfortunately, the diff is pretty messy. I’ve split it into 3 PRs:

1. Swapping out the config files and adapting the Bazel config.
2. Renaming the comments to disable the lints on a bunch of lines.
3. Addressing the actual new hints.

I strongly recommend reviewing this with whitespace disabled since eslint warns on non-breaking spaces by default and for whatever reason we had tons of those.

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