Docs restructure (#2953)

Needs to be merged into `gh-pages` later on.

docs/nginx/dendrite-sample.conf

@@ -0,0 +1,32 @@
+#change IP to location of monolith server
+upstream monolith{
+    server 127.0.0.1:8008;
+}
+server {
+    listen 443 ssl; # IPv4
+    listen [::]:443 ssl; # IPv6
+    server_name my.hostname.com;
+
+    ssl_certificate /path/to/fullchain.pem;
+    ssl_certificate_key /path/to/privkey.pem;
+    ssl_dhparam /path/to/ssl-dhparams.pem;
+
+    proxy_set_header Host      $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_read_timeout         600;
+
+    location /.well-known/matrix/server {
+        return 200 '{ "m.server": "my.hostname.com:443" }';
+    }
+
+    location /.well-known/matrix/client {
+        # If your sever_name here doesn't match your matrix homeserver URL
+        # (e.g. hostname.com as server_name and matrix.hostname.com as homeserver URL)
+        # add_header Access-Control-Allow-Origin '*';
+        return 200 '{ "m.homeserver": { "base_url": "https://my.hostname.com" } }';
+    }
+
+    location /_matrix {
+        proxy_pass http://monolith;
+    }
+}