feature(component-send-email): add mailer config path

packages/component-send-email/src/SendEmail.js

 const nodemailer = require('nodemailer')
 const logger = require('@pubsweet/logger')
-const config = require('./config')
+const config = require('config')
 
+const mailerConfig = require(config.mailer.path)
 module.exports = {
   send: (toEmail, subject, textBody, htmlBody) => {
-    const mailerConfig = config.mailer
     const transporter = nodemailer.createTransport(mailerConfig.transport)
     transporter.sendMail(
       {

packages/component-send-email/src/config.js

-const AWS = require('aws-sdk')
-
-module.exports = {
-  mailer: {
-    from: process.env.EMAIL_SENDER,
-    transport: {
-      SES: new AWS.SES({
-        accessKeyId: process.env.AWS_SES_ACCESS_KEY,
-        secretAccessKey: process.env.AWS_SES_SECRET_KEY,
-        region: process.env.AWS_SES_REGION,
-      }),
-    },
-  },
-}

packages/xpub-faraday/config/default.js

@@ -3,6 +3,7 @@ require('dotenv').config()
 const path = require('path')
 const components = require('./components.json')
 const logger = require('winston')
+const AWS = require('aws-sdk')
 
 const environment = process.env.NODE_ENV || 'development'
 const getInviteUrl = () => {
@@ -83,6 +84,7 @@ module.exports = {
   },
   mailer: {
     from: process.env.EMAIL_SENDER || 'test_sender@domain.com',
+    path: `${__dirname}/mailer`,
   },
   publicKeys: [
     'pubsweet-client',

packages/xpub-faraday/config/mailer.js

+const AWS = require('aws-sdk')
+
+module.exports = {
+  from: process.env.EMAIL_SENDER,
+  transport: {
+    SES: new AWS.SES({
+      accessKeyId: process.env.AWS_SES_ACCESS_KEY,
+      secretAccessKey: process.env.AWS_SES_SECRET_KEY,
+      region: process.env.AWS_SES_REGION,
+    }),
+  },
+}