enhance(linting): Enable the eslint:recommended rules

Among other things, this makes no-console an error rather than a warning.
https://eslint.org/docs/rules/no-console

Given that we now have a proper logging facility, good to prevent incidental
introduction in the future.

.eslintrc

@@ -6,6 +6,7 @@
   },
   "extends": [
     "airbnb",
+    "eslint:recommended",
     "plugin:react/recommended",
     "plugin:flowtype/recommended",
     "plugin:import/errors",

app/lnd/methods/index.js

@@ -1,4 +1,3 @@
-/* eslint no-console: 0 */ // --> OFF
 // import grpc from 'grpc'
 
 import * as invoicesController from './invoicesController'

app/lnd/walletUnlockerMethods/index.js

@@ -1,5 +1,3 @@
-/* eslint no-console: 0 */ // --> OFF
-
 import * as walletController from '../methods/walletController'
 
 export default function (walletUnlocker, log, event, msg, data) {