sphinx: Add support for multiple docs version

Enhance the sphinx experience/nagivation with:

* Remove the pointless looking parts of breadcrumb navigtation
* Add a document type switcher to the breadcrumb navigation
* Add a version selection switch to the breadcrumb navigation

(From yocto-docs rev: 1823624bdb9ea002d44c9e6d0fd4cd662bff36ad)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/documentation/_templates/breadcrumbs.html b/documentation/_templates/breadcrumbs.html
new file mode 100644
index 0000000000..eb6244b74c
--- /dev/null
+++ b/documentation/_templates/breadcrumbs.html
@@ -0,0 +1,14 @@
+{% extends "!breadcrumbs.html" %}
+
+{% block breadcrumbs %}
+    <li>
+      <span class="doctype_switcher_placeholder">{{ doctype or 'single' }}</span>
+      <span class="version_switcher_placeholder">{{ release }}</span>
+    </li>
+    <li> &raquo;</li>
+    {% for doc in parents %}
+      <li><a href="{{ doc.link|e }}">{{ doc.title }}</a> &raquo;</li>
+    {% endfor %}
+    <li>{{ title }}</li>
+{% endblock %}
+