Added Piano Solo Paywall-Detection

* Test: http://www.noz.de/deutschland-welt/vermischtes/artikel/497014/internationaler-notstand-wegen-ebola-ausgerufen

share/apps.json

@@ -2450,6 +2450,12 @@
 			"html": "var piwikTracker = Piwik\\.getTracker\\(",
 			"env": [ "^Piwik$", "^_paq$" ]
 		},
+        "Piano Solo":{
+            "website": "www.pianomedia.com/products",
+            "cats": [43],
+            "html": "PianoMedia\\.box",
+            "headers": { "Set-Cookie": "pianovisitkey" }
+        },
 		"Plentymarkets": {
 			"website": "plentymarkets.eu",
 			"cats": [ 6 ],