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

backend/db.js

@@ -0,0 +1,25 @@
+const config = require('config');
+
+if (!config.has('database')) {
+    throw new Error('Database config does not exist! Please read the instructions: https://github.com/jc21/nginx-proxy-manager/blob/master/doc/INSTALL.md');
+}
+
+let data = {
+    client:     config.database.engine,
+    connection: {
+        host:     config.database.host,
+        user:     config.database.user,
+        password: config.database.password,
+        database: config.database.name,
+        port:     config.database.port
+    },
+    migrations: {
+        tableName: 'migrations'
+    }
+};
+
+if (typeof config.database.version !== 'undefined') {
+    data.version = config.database.version;
+}
+
+module.exports = require('knex')(data);