feat: Move app name to navbar

public/index.html

@@ -12,15 +12,15 @@
 
 <div class="navbar">
     <div class="navbar-brand">
-        <a class="button" href="https://vdrd.de">
-            <b data-i18n-key="back-to-home">zurück zur Homepage</b>
-        </a>
+        <div class="navbar-item">
+            <img src="assets/img/logo_vdrd.png" alt="VdRD Log">
+            <h1 data-i18n-key="app-name" class="title is-3">Käfigrechner</h1>
+        </div>
     </div>
 </div>
 
 
 <div class="content">
-    <h1 data-i18n-key="app-name" class="title is-1">Käfigrechner</h1>
     <div class="tabs is-centered is-boxed is-toggle" id="primary-tabs">
         <ul>
             <li class="is-active" data-tab-id="1">