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/nginx/access/list/main.ejs

@@ -0,0 +1,12 @@
+<thead>
+    <th width="30">&nbsp;</th>
+    <th><%- i18n('str', 'name') %></th>
+    <th><%- i18n('users', 'title') %></th>
+    <th><%- i18n('proxy-hosts', 'title') %></th>
+    <% if (canManage) { %>
+    <th>&nbsp;</th>
+    <% } %>
+</thead>
+<tbody>
+    <!-- items -->
+</tbody>