Edit a few existing linting rules and add a few more. (#3845)
Edit a few existing linting rules and add a few more. (#3845)

* Edit a few existing rules and add a few more.

* Add options to max-len

* Add review  changes

* Forgot to switch back off no-unresolved

* Switch back off no-else-return

jelliotartz/Panoptes-Front-End,jelliotartz/Panoptes-Front-End,jelliotartz/Panoptes-Front-End,zooniverse/Panoptes-Front-End,amyrebecca/Panoptes-Front-End,amyrebecca/Panoptes-Front-End,amyrebecca/Panoptes-Front-End