Add missing static routes for favicon, about and acknowledgments

templates/acknowledgments.html

@@ -0,0 +1,19 @@
+{% extends "base.html" %}
+
+{% block title %}Acknowledgments{% endblock title %}
+
+{%- block body %}
+<h1>Acknowledgments</h1>
+
+<p>en is only possible thanks to a number of projects and people:</p>
+
+<ul>
+    <li><a href="https://rust-lang.org/">The Rust Programing Language</a></li>
+    <li><a href="https://tokio.rs/">Tokio</a> and
+        <a href="https://github.com/tokio-rs/axum">Axum</a></li>
+    <li><a href="https://keats.github.io/tera/">Tera</a></li>
+    <li><a href="https://serde.rs/">Serde</a> and the
+        <a href="https://github.com/toml-rs/toml">toml crate</a></li>
+</ul>
+
+{%- endblock body %}