Better reverse proxy support.

wled00/data/settings_leds.htm

@@ -669,9 +669,11 @@ Length: <input type="number" name="XC${i}" id="xc${i}" class="l" min="1" max="65
 				let path = l.pathname;
 				let paths = path.slice(1,path.endsWith('/')?-1:undefined).split("/");
 				if (paths.length > 2) {
+					paths.pop(); // remove "leds"
+					paths.pop(); // remove "settings"
 					locproto = l.protocol;
 					loc = true;
-					locip = l.hostname + (l.port ? ":" + l.port : "") + "/" + paths[0];
+					locip = l.hostname + (l.port ? ":" + l.port : "") + "/" + paths.join('/');
 				}
 			}
 			loadJS(getURL('/settings/s.js?p=2'), false);	// If we set async false, file is loaded and executed, then next statement is processed