add api key to search bar

supplemental-ui/partials/header-content.hbs

@@ -4,9 +4,11 @@
       <a class="navbar-item" href="{{{or site.url (or siteRootUrl siteRootPath)}}}">
         <img alt="" src="{{{uiRootPath}}}/img/jMonkeyDocLogo.png" height="32" type="image/x-icon">
       </a>
+      {{#if env.ALGOLIA_API_KEY}}
       <div class="navbar-item hide-for-print">
-        <input type="text" placeholder="Search docs..." id="search-input"/>
+        <input id="search-input" type="text" placeholder="Search docs">
       </div>
+      {{/if}}
       <button class="navbar-burger" data-target="topbar-nav">
         <span></span>
         <span></span>