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/LiveQuery/Subscription.js

@@ -1,4 +1,3 @@
-import {matchesQuery, queryHash}  from './QueryTools';
 import logger from '../logger';
 
 export type FlattenedObjectData = { [attr: string]: any };