Cleanup the theme and autofocus the search box

Refactor the Apertis theme to make working on it easier and then autofocus the text field when opening the search dropdown.

themes/apertis/layouts/partials/head.html

@@ -52,6 +52,7 @@
   <link rel="stylesheet" href="{{ "css/jwd-cssBranding_01.min.css" | absURL }}" />
   <link rel="stylesheet" href="{{ "css/jwd-cssContentMods_01.min.css" | absURL }}" />
   <script src="https://code.jquery.com/jquery-2.2.4.min.js" integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script>
+  <script>var BaseURL = "{{ .Site.BaseURL }}";</script>
   <script src="{{ "js/jwd-JS_01.min.js" | absURL }}"></script>
   <!-- end of JWD -->