Provide fallback values for <patek-logo>s

This is targeted to browsers without custom elements support, or with
disabled JavaScript.

themes/patek/layouts/404.html

@@ -5,6 +5,6 @@
         <h3>Wut? The page you were looking for is not here. Either you can't type or we can't code. Or both.</h3>
     </div>
     <br>
-    <patek-logo class="logo404" title="404"></patek-logo>
+    <patek-logo class="logo404" title="404">404</patek-logo>
     </div>
 {{ end }}

themes/patek/layouts/index.html

@@ -28,7 +28,7 @@
 -->
     <div id="landing">
         <div class="patek-logo-top">
-            <patek-logo></patek-logo>
+            <patek-logo>Pátek</patek-logo>
         </div>
         <div class="intro container">
             <section class="section">

themes/patek/layouts/partials/menu.html

@@ -2,7 +2,7 @@
 <nav id="main-menu-bar" class="navbar is-primary">
     <div class="container">
         <div class="navbar-brand">
-            <a href="{{ .Site.Home.Permalink }}" class="navbar-item"><patek-logo></patek-logo></a>
+            <a href="{{ .Site.Home.Permalink }}" class="navbar-item"><patek-logo>Pátek</patek-logo></a>
             <div class="navbar-burger" id="main-menu-burger" onclick="document.querySelectorAll('#main-menu, #main-menu-burger').forEach(function (value) { value.classList.toggle('is-active') })">
                 <span aria-hidden="true"></span>
                 <span aria-hidden="true"></span>