Fix missing redirects (#1640)

* add a simple 404

* fix redirects for language links

* activate prism to fix highlighting

Author: siku2

website/pages/en/404.js

@@ -0,0 +1,22 @@
+const React = require("react");
+
+const CompLibrary = require("../../core/CompLibrary");
+
+const Container = CompLibrary.Container;
+
+function NotFound() {
+  return (
+    <div className="docMainWrapper wrapper">
+      <Container className="mainContainer documentContainer postContainer">
+        <div className="post">
+          <header className="postHeader">
+            <h1>Not Found</h1>
+          </header>
+          The page you are looking for does not exist.
+        </div>
+      </Container>
+    </div>
+  );
+}
+
+module.exports = NotFound;

website/pages/en/index.js

@@ -0,0 +1,36 @@
+const React = require("react");
+
+const CompLibrary = require("../../core/CompLibrary");
+
+const Container = CompLibrary.Container;
+
+function Home(props) {
+  const { config, language } = props;
+  const langPath = language ? language + "/" : "";
+  const href = `${config.baseUrl}${config.docsUrl}/${langPath}`;
+
+  return (
+    <div className="docMainWrapper wrapper">
+      {/* not ideal, but it's the best we can do with Docusaurus v1 */}
+      <script
+        dangerouslySetInnerHTML={{
+          __html: `window.location.href = "${href}";`,
+        }}
+      ></script>
+      <Container className="mainContainer documentContainer postContainer">
+        <div className="post">
+          <header className="postHeader">
+            <h1>Redirecting</h1>
+          </header>
+          <div>
+            {/* please note the trailing space */}
+            {"If you are not redirected automatically, follow this "}
+            <a href={href}>link</a>.
+          </div>
+        </div>
+      </Container>
+    </div>
+  );
+}
+
+module.exports = Home;

website/siteConfig.js

@@ -71,6 +71,8 @@ const siteConfig = {
     // Highlight.js theme to use for syntax highlighting in code blocks.
     theme: 'default',
   },
+  // prism manages to actually highlight our code properly
+  usePrism: ["rust"],
 
   // Add custom scripts here that would be placed in <script> tags.
   // scripts: ['https://buttons.github.io/buttons.js'],