- Refactoring of the mail sending part. Mail queue (table 'queued') is now used also for all test emails.

- More options how to send test emails.
- Fixed problems with pausing a campaign (#593)
- Started rework of transactional sender of templates (#606), however this contains functionality regression at the moment because it does not interpret templates as HBS. It needs HBS option for templates as described in https://github.com/Mailtrain-org/mailtrain/issues/611#issuecomment-502345227

TODO:
- detect sending errors connected to not able to contact the mailer and pause/retry campaing and queued sending - don't mark the recipients as BOUNCED
- add FAILED campaign state and fall into it if sending to campaign consistently fails (i.e. the error with sending is not temporary)
- if the same happends for queued email, delete the message

server/routes/rest/templates.js

@@ -5,7 +5,6 @@ const templates = require('../../models/templates');
 
 const router = require('../../lib/router-async').create();
 const {castToInteger} = require('../../lib/helpers');
-const CampaignSender = require('../../lib/campaign-sender');
 
 
 router.getAsync('/templates/:templateId', passport.loggedIn, async (req, res) => {
@@ -39,10 +38,4 @@ router.postAsync('/templates-by-namespace-table/:namespaceId', passport.loggedIn
     return res.json(await templates.listByNamespaceDTAjax(req.context, castToInteger(req.params.namespaceId), req.body));
 });
 
-router.postAsync('/template-test-send', passport.loggedIn, passport.csrfProtection, async (req, res) => {
-    const data = req.body;
-    const result = await CampaignSender.testSend(req.context, data.listCid, data.subscriptionCid, data.campaignId, data.sendConfigurationId, data.html, data.text);
-    return res.json(result);
-});
-
 module.exports = router;