Cleanup of old code, moved Node class, many improvements on file handling

views/pages/login.gotmpl

@@ -4,7 +4,7 @@
 	<img id="logo" src="/images/v1/logo.svg">
 	<input type="text" id="username" placeholder="Username">
 	<input type="password" id="password" placeholder="Password">
-	<button onclick=window._login.authenticate()>Log in</button>
+	<button onclick="globalThis._login.authenticate()">Log in</button>
 	<div id="error"></div>
 </div>
 
@@ -42,6 +42,6 @@ class Login {
 	}
 }
 
-window._login = new Login()
+globalThis._login = new Login()
 </script>
 {{ end }}