Reports ported to ReactJS and Knex

Note that the interface for the custom JS code inside a report template has changed. It now offers promise-based interface and exposes knex.

models/subscriptions.js

@@ -0,0 +1,23 @@
+'use strict';
+
+const knex = require('../lib/knex');
+const dtHelpers = require('../lib/dt-helpers');
+const interoperableErrors = require('../shared/interoperable-errors');
+
+const Status = {
+    SUBSCRIBED: 1,
+    UNSUBSCRIBED: 2,
+    BOUNCED: 3,
+    COMPLAINED: 4,
+    MAX: 5
+};
+
+async function list(listId) {
+    return await knex(`subscription__${listId}`);
+}
+
+
+module.exports = {
+    Status,
+    list
+};