copy over DataHub Cloud docs from datahubio/datahub-cloud-template-da…

…taset/docs

Related to: datopian/datahub#1286

datahub-cloud/Add sidebar navigation.md

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+---
+title: "Add sidebar navigation"
+---
+
+<div className="hero">
+    <p className="hero-description">A well-structured sidebar can significantly enhance the usability and navigability of your documentation or data site. With Datahub Cloud, you can easily implement sidebar navigation to help users quickly find and access the content they need. This section will guide you through the steps to add and customize a sidebar for your site.</p>
+</div>
+
+## Add sidebar navigation
+
+You can enable the sidebar by adding config.json file in the root of your site's repository (or its subfolder if you're publishing only this subfolder with DH Cloud) with the following content:
+
+```
+{
+  "showSidebar": true
+}
+```
+
+Here's how it should look like:"
+
+![[./assets/Screenshot3.png]]