+ meta referrer tag

src/templates/main.html

@@ -5,6 +5,7 @@
     <meta name="google-site-verification" content="8BxOTw-Q02DS2KAdcGcnIMwiPZ58DVB18XpOfRibCcg">
     <meta name="msvalidate.01" content="E878301FE3E3F12D233A6B1156889601" />
     <meta name="viewport" content="width=device-width, maximum-scale=1.0" />
+    <meta name="referrer" content="unsafe-url">
 
     <base href="/">
     <title ng-bind="title">ДХШ Шлиссельбурга</title>