Clean up legacy references to Kontena (#216)

Signed-off-by: Miska Kaipiainen <miska.kaipiainen@gmail.com>

dashboard/index.html

@@ -2,7 +2,7 @@
 <html lang="en">
 <head>
   <meta charset="UTF-8">
-  <title>Kubernetes Dashboard / Kontena Lens</title>
+  <title>Lens - The Kubernetes IDE</title>
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="apple-touch-icon" sizes="180x180" href="<%= require('./client/favicon/apple-touch-icon.png') %>">
   <link rel="icon" type="image/png" sizes="32x32" href="<%= require('./client/favicon/favicon-32x32.png') %>">