fixed /admin redirection and /static proxy_pass

Author: zeylos

src/frontend/nginx/nginx.conf.template

@@ -19,14 +19,27 @@ server {
      }
 
     # Django admin
-    location ^~ ^/${DJANGO_ADMIN_URL}/ {
+    location /${DJANGO_ADMIN_URL} {
+        return 301 https://$host/${DJANGO_ADMIN_URL}/;
+    }
+
+    location ^~ /${DJANGO_ADMIN_URL}/ {
         proxy_set_header X-Forwarded-Proto https;
         proxy_set_header Host $http_host;
         proxy_set_header X-Forwarded-For $remote_addr;
         proxy_redirect off;
         proxy_pass http://backend_server;
     }
 
+    # Django statics
+    location ^~ /static/ {
+        proxy_set_header X-Forwarded-Proto https;
+        proxy_set_header Host $http_host;
+        proxy_set_header X-Forwarded-For $remote_addr;
+        proxy_redirect off;
+        proxy_pass http://backend_server;
+     }
+
     # Next static export
     location ~* ^/mailbox/[^/]+$ {
         try_files /mailbox/[mailboxId].html =404;