Run eslint and enable linting on GitLabCI

This MR does two things:

* Runs the ore ESLint package on all project files and commits the changes
* Rewrites workbench_access.js to use vanilla JS instead of jQuery.

No reviews? Likely going to commit.

I am still not used to comments on MRs, so tickets need updating,.

Converts the JS to vanilla JS and removes all dependencies.

To test on Tugboat

1. Configure an editorial scheme using the Workbench Access vocabulary
2. Go to the Users page for a section (e.g. "/admin/config/workflow/workbench_access/section/sections/workbench_access/users")
3. Click the "Switch between textarea/autocomplete" link under the autocomplete / text area
4. On click the visibility of the autocomplete / text area should toggle