Add *.app.vostan.org servers.

Change configuration name. Now configuration name is the reversed site
name.
Add all those configuration to https certificate.

sites/org.vostan.private.conf

@@ -0,0 +1,39 @@
+##
+# You should look at the following URL's in order to grasp a solid understanding
+# of Nginx configuration files in order to fully unleash the power of Nginx.
+# https://www.nginx.com/resources/wiki/start/
+# https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
+# https://wiki.debian.org/Nginx/DirectoryStructure
+#
+# In most cases, administrators will remove this file from sites-enabled/ and
+# leave it as reference inside of sites-available where it will continue to be
+# updated by the nginx packaging team.
+#
+# This file will automatically load configuration files provided by other
+# applications, such as Drupal or Wordpress. These applications will be made
+# available underneath a path with that package name, such as /drupal8.
+#
+# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
+##
+
+server {
+    listen 443 ssl;
+    listen [::]:443 ssl;
+    http2 on;
+    server_name private.vostan.org;
+
+    # SSL configuration
+    #
+    ssl_certificate /etc/nginx/ssl/live/www.vostan.org/fullchain.pem;
+    ssl_certificate_key /etc/nginx/ssl/live/www.vostan.org/privkey.pem;
+
+    location / {
+        try_files $uri @private_flask_server;
+    }
+
+    location @private_flask_server {
+        include uwsgi_params;
+        uwsgi_pass unix:/run/uwsgi/private-vostan-org.sock;
+    }
+}
+