Adds liniting into the workflow (#3082)

* initial linting of src

* fix indent to 2 spaces

* Removes unnecessary rules

* ignore spec folder for now

* Spec linting

* Fix spec indent

* nits

* nits

* no no-empty rule

src/Routers/RolesRouter.js

@@ -1,7 +1,5 @@
 
 import ClassesRouter from './ClassesRouter';
-import PromiseRouter from '../PromiseRouter';
-import rest from '../rest';
 
 export class RolesRouter extends ClassesRouter {
   handleFind(req) {