adds search bar as last element in top horizontal nav bar

Author: therapon

src/partials/header-content.hbs

@@ -92,6 +92,15 @@
             </svg>
           </a>
         </div>
+        
+{{#if env.SITE_SEARCH_PROVIDER}}
+       <div class="navbar-item search hide-for-print">
+        <div id="search-field" class="field">
+          <input id="search-input" type="text" placeholder="Search the docs"{{#if page.home}} autofocus{{/if}}>
+        </div>
+       </div>
+{{/if}}
+
       </div>
     </div>
   </nav>