Improved Nette Framework detection

src/apps.json

@@ -5038,8 +5038,15 @@
 			18
 		  ],
 		  "headers": {
-				"X-Powered-By": "Nette Framework"
+			"X-Powered-By": "Nette Framework",
+			"Set-Cookie": "nette-browser="
 		  },
+		  "env": "Nette",
+		  "html": [
+			"<(input|select|textarea)[^>]+data-nette-rules",
+			"<(div|article|main|footer|span|input|title|a)[^>]+id=\"snippet--",
+			"<(form|input|select|label)[^>]+id=\"frm-"
+		  ],
 		  "icon": "Nette Framework.png",
 		  "implies": "PHP",
 		  "website": "nette.org"