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/empty/main.ejs

@@ -0,0 +1,11 @@
+<% if (title) { %>
+    <h1 class="h2 mb-3"><%- title %></h1>
+<% }
+
+if (subtitle) { %>
+    <p class="h4 text-muted font-weight-normal mb-7"><%- subtitle %></p>
+<% }
+
+if (link) { %>
+    <a class="btn btn-<%- btn_color %>" href="#"><%- link %></a>
+<% } %>

frontend/js/app/empty/main.js

@@ -0,0 +1,33 @@
+const Mn       = require('backbone.marionette');
+const template = require('./main.ejs');
+
+module.exports = Mn.View.extend({
+    className: 'text-center m-7',
+    template:  template,
+
+    options: {
+        btn_color: 'teal'
+    },
+
+    ui: {
+        action: 'a'
+    },
+
+    events: {
+        'click @ui.action': function (e) {
+            e.preventDefault();
+            this.getOption('action')();
+        }
+    },
+
+    templateContext: function () {
+        return {
+            title:     this.getOption('title'),
+            subtitle:  this.getOption('subtitle'),
+            link:      this.getOption('link'),
+            action:    typeof this.getOption('action') === 'function',
+            btn_color: this.getOption('btn_color')
+        };
+    }
+
+});