fix(search): do not send referrer

- https://developer.mozilla.org/en-US/docs/Web/HTML/Link_types
- whatwg/html#2983
- whatwg/html#4332

themes/chameleon/layout/_partial/header.ejs

@@ -6,7 +6,7 @@
     <% } %>
 
     <div class="searchContainer">
-      <form id="searchForm" method="post" action="https://duckduckgo.com/" target="_blank">
+      <form id="searchForm" method="post" action="https://duckduckgo.com/" target="_blank" rel="noopener external nofollow noreferrer">
       <input type="text" name="q" class="searchBox" id="searchTxt" placeholder="Search..." title="Powered by DuckDuckGo">
       <input type="hidden" name="sites" value="curben.netlify.com">
       <input type="hidden" name="kd" value="-1">
@@ -24,13 +24,12 @@
   </nav>
   <%/* Nav menu for mobile */%>
   <nav class="mobile-nav">
-    <h1 class="nickname"><a href="<%- url_for(theme.menu['Home']) %>"><%= theme.nickname %></a></h1>
     <ul class="mobile-nav-menu">
     <label for="mobile-menu-toggle"><a class="no-underline">&#9776; Menu</a></label>
     <input id="mobile-menu-toggle" type="checkbox"/>
     <ul class="mobile-nav-link">
       <div class="searchContainer">
-        <form id="searchFormMob" method="post" action="https://duckduckgo.com/" target="_blank">
+        <form id="searchFormMob" method="post" action="https://duckduckgo.com/" target="_blank" rel="noopener external nofollow noreferrer">
         <input type="text" name="q" class="searchBox" id="searchTxtMob" placeholder="Search..." title="Powered by DuckDuckGo">
         <input type="hidden" name="sites" value="curben.netlify.com">
         <input type="hidden" name="kd" value="-1">