fix lint errors

src/scripts/imagehelper.js

@@ -1,3 +1,5 @@
+/* eslint-disable indent */
+
 import browser from 'browser';
 
     export function getDeviceIcon(device) {

src/scripts/settings/appSettings.js

@@ -1,3 +1,5 @@
+/* eslint-disable indent */
+
 import appStorage from 'appStorage';
 import events from 'events';
 

src/scripts/settings/userSettings.js

@@ -1,3 +1,5 @@
+/* eslint-disable indent */
+
 import appSettings from 'appSettings';
 import events from 'events';