Merge pull request #254 from MetaCell/feature/253_fix_eslint

#253 Enable eslint to parse ES2020 features

Author: Lucas Rebscher

webapp/.eslintrc.js

@@ -2,6 +2,7 @@ module.exports = {
   extends: [
     'airbnb',
   ],
+  parser: 'babel-eslint',
   rules: {
     // Turn off some rules so that we can improve the code step by step
     'class-methods-use-this': 0,