Implemented XML Formatter and simplified structure of XML tools (#229)

Co-authored-by: Adam Bem <adam.bem@zoho.eu>
Reviewed-on: #229
Reviewed-by: Mikolaj Widla <widlam@noreply.example.com>

Frontend/nginx.conf

@@ -8,6 +8,7 @@ server {
     location / {
         root   /usr/share/nginx/html;
         index  index.html index.htm;
+        try_files $uri $uri/ /index.html;
         expires -1;
         add_header Cache-Control "private, no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0";
     }