Restructure routes, scroll selected flight into view on reload

web/app/routes/logbook/admin.tsx

@@ -0,0 +1,13 @@
+import { Container, Group, Title } from "@mantine/core";
+
+export default function Admin() {
+  return (
+    <>
+      <Container>
+        <Group justify="space-between" align="center" grow my="lg">
+          <Title order={2}>Admin</Title>
+        </Group>
+      </Container>
+    </>
+  );
+}