Add palette manager to editor user guide

Author: knolleary

_includes/editor-guide-toc.html

@@ -13,7 +13,7 @@
             <li {% if page.url == "/docs/user-guide/editor/workspace/import-export" %}class="active"{% endif %}><a href="/docs/user-guide/editor/workspace/import-export" style="padding-left: 60px;">Import/Export</a></li>
             <li {% if page.url == "/docs/user-guide/editor/workspace/search" %}class="active"{% endif %}><a href="/docs/user-guide/editor/workspace/search" style="padding-left: 60px;">Search</a></li>
             <li {% if page.url == "/docs/user-guide/editor/palette/" %}class="active"{% endif %}><a href="/docs/user-guide/editor/palette/">Palette</a></li>
-            <!-- <li {% if page.url == "/docs/user-guide/editor/palette/manager" %}class="active"{% endif %}><a href="/docs/user-guide/editor/palette/manager" style="padding-left: 60px;">Palette Manager</a></li> -->
+            <li {% if page.url == "/docs/user-guide/editor/palette/manager" %}class="active"{% endif %}><a href="/docs/user-guide/editor/palette/manager" style="padding-left: 60px;">Palette Manager</a></li>
             <li {% if page.url == "/docs/user-guide/editor/sidebar" %}class="active"{% endif %}><a href="/docs/user-guide/editor/sidebar">Sidebar</a></li>
             <li {% if page.url == "/docs/user-guide/editor/sidebar/info" %}class="active"{% endif %}><a href="/docs/user-guide/editor/sidebar/info" style="padding-left: 60px;">Information</a></li>
             <li {% if page.url == "/docs/user-guide/editor/sidebar/debug" %}class="active"{% endif %}><a href="/docs/user-guide/editor/sidebar/debug" style="padding-left: 60px;">Debug</a></li>

docs/user-guide/editor/images/editor-user-settings-palette-install-details.png

@@ -4,4 +4,50 @@ toc: editor-guide-toc.html
 title: Palette Manager
 ---
 
-*This page left intentionally blank - for now*
+
+The Palette Manager can be used to install new nodes into the palette. It can be
+accessed under the Palette tab of the User Settings dialog.
+
+<div style="width:400px" class="figure align-right">
+  <img src="../images/editor-user-settings-palette-nodes.png" alt="Palette Manager - Nodes tab">
+  <p class="caption">Palette Manager - Nodes tab</p>
+</div>
+
+<table class="action-ref inline">
+ <tr><th colspan="2">Reference</th></tr>
+ <tr><td>Key shortcut</td><td><code>Ctrl/⌘-Shift-p</code></td></tr>
+ <tr><td>Menu option</td><td><code>Manage palette</code></td></tr>
+ <tr><td>Action</td><td><code>core:manage-palette</code></td></tr>
+</table>
+
+The Palette Manager has two tabs:
+
+ - Nodes lists the modules that are currently installed in the runtime
+ - Install lists the available modules that can be installed
+
+### Managing nodes
+
+Each entry in the Nodes list shows the name and version of the module along with
+a list of the individual node types the module provides.
+
+Options are provided to remove, disable or upgrade each module. If a node is currently
+in use within the flow, it cannot be removed or disabled.
+
+
+### Installing nodes
+
+<div style="width:400px" class="figure align-right">
+  <img src="../images/editor-user-settings-palette-install.png" alt="Palette Manager - Install tab">
+  <p class="caption">Palette Manager - Install tab</p>
+</div>
+
+The Install tab can be used to search for available modules and install them.
+
+To search for a module, enter its name in the search bar. The search results
+show the details of the modules, including when it was last updated and a link
+to its documentation. It can be installed by clicking the 'install' button.
+
+<div style="width: 500px" class="figure">
+  <img src="../images/editor-user-settings-palette-install-details.png" alt="Palette Manager - Install module details">
+  <p class="caption">Palette Manager - Install module details</p>
+</div>