Merge pull request #1532 from seralf/patch-2

added Virtuoso detection

src/apps.json

@@ -8540,6 +8540,20 @@
 			"implies": "Joomla",
 			"website": "http://virtuemart.net"
 		},
+		"Virtuoso": {
+			"cats": [
+				"34"
+			],
+			"website": "https://virtuoso.openlinksw.com/",
+			"meta": {
+				"Keywords": "^OpenLink Virtuoso Sparql",
+				"Copyright": "^Copyright © \\d{4} OpenLink Software"
+			},
+			"url": ".*/sparql\\.*",
+			"headers": {
+				"Server": "Virtuoso\\/?(\\d{2}\\.\\d{2}\\.\\d{4})?\\;version:\\1"
+			}
+		},
 		"Visual WebGUI": {
 			"cats": [
 				"18"