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/users/main.ejs

@@ -0,0 +1,18 @@
+<div class="card">
+    <div class="card-status bg-teal"></div>
+    <div class="card-header">
+        <h3 class="card-title"><%- i18n('users', 'title') %></h3>
+        <div class="card-options">
+            <a href="#" class="btn btn-outline-teal btn-sm ml-2 add-item"><%- i18n('users', 'add') %></a>
+        </div>
+    </div>
+    <div class="card-body no-padding min-100">
+        <div class="dimmer active">
+            <div class="loader"></div>
+            <div class="dimmer-content list-region">
+                <!-- List Region -->
+            </div>
+        </div>
+
+    </div>
+</div>