Disable referrer when clicking links

public/index.html

@@ -8,7 +8,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
     <meta name="theme-color" content="#ffc107">
 
-
+    <meta name="referrer" content="no-referrer">
     <meta name="apple-mobile-web-app-capable" content="yes">
     <meta name="apple-mobile-web-app-title" content="EteSync">
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">