Test to add custom searchbox.html

docs/source/_templates/searchbox.html

@@ -0,0 +1,24 @@
+<script type="text/javascript">
+var Search = {
+    store : null,
+    setIndex : function (data) {
+        this.store = data.store;
+    },
+};
+</script>
+{# The script searchindex.js contains the code Search.setIndex(...) where
+   the content is an object built from IndexBuilder.freeze(). So we need to
+   setup the Search.setIndex function beforehand just to store the data.
+   This should all be finished when onload fires, and at that point the code in
+   searchbox.js will pull the data out of Search.store and build the actual
+   index and callbacks.
+ #}
+<script src="{{ pathto('searchindex.js', 1) }}" type="text/javascript"></script>
+
+<form class="search" action="" method="get" autocomplete="new-password">
+  <input type="hidden" name="check_keywords" value="yes" />
+  <input type="hidden" name="area" value="default" />
+  <input type="hidden" id="ls_lunrsearch-highlight" value="{{ lunrsearch_highlight }}" />
+  <input type="text" class="search-field" id="ls_search-field" name="q" placeholder="Search API" />
+  <ul class="results" id="ls_search-results"></ul>
+</form>