Fixed weird floating footer behavior, updated Timeline to handle new growing scrolling content div, fixed grammar issue on chubby buttons, removed used nginx configs and Dockerfile comments, made Table not go full-w automatically, added tests to ensure no orphaned astro pages or site layout entries exist, dummy sitemap index so code analysis doesn't freak out

nginx/nginx.conf

@@ -14,12 +14,6 @@ http {
     root   /usr/share/nginx/html;
     index  index.html index.htm;
     include /etc/nginx/mime.types;
-    #include /etc/nginx/conf.d/_release_token.conf;
-
-    #etag off;
-
-    #add_header ETag "\"W/$release_token\"" always;
-    #add_header Cache-Control "max-age=0, must-revalidate" always;
 
     gzip on;
     gzip_proxied any;