Eslint clean up

[jetfuel]

This PR should conclude the need of #364

I did, however, turn off the check for the follow checks

    'no-invalid-this': 'off',
    'require-jsdoc': 'off',
    'no-unused-vars': 'off',

One is Javascript function documentation requirement. Turning it on might be overkill, but we should be vigilant to provide better documentaitons

The other two checks are related to debounce functions. ESLint can't parse them properly so I had to show them down until I find a better solution.