settings: move branding settings into branding.js

src/mailer.js

@@ -17,6 +17,7 @@ exports = module.exports = {
 
 const assert = require('assert'),
     BoxError = require('./boxerror.js'),
+    branding = require('./branding.js'),
     debug = require('debug')('box:mailer'),
     ejs = require('ejs'),
     mail = require('./mail.js'),
@@ -31,7 +32,7 @@ const MAIL_TEMPLATES_DIR = path.join(__dirname, 'mail_templates');
 
 // This will collect the most common details required for notification emails
 async function getMailConfig() {
-    const cloudronName = await settings.getCloudronName();
+    const cloudronName = await branding.getCloudronName();
     const supportConfig = await settings.getSupportConfig();
 
     return {