Major overhaul

- Docker buildx support in CI
- Cypress API Testing in CI
- Restructured folder layout (insert clean face meme)
- Added Swagger documentation and validate API against that (to be completed)
- Use common base image for all supported archs, which includes updated nginx with ipv6 support
- Updated certbot and changes required for it
- Large amount of Hosts names will wrap in UI
- Updated packages for frontend
- Version bump 2.1.0

frontend/js/app/ui/footer/main.js

@@ -0,0 +1,14 @@
+const Mn       = require('backbone.marionette');
+const template = require('./main.ejs');
+const Cache    = require('../../cache');
+
+module.exports = Mn.View.extend({
+    className: 'container',
+    template:  template,
+
+    templateContext: {
+        getVersion: function () {
+            return Cache.version || '0.0.0';
+        }
+    }
+});