Add links to homepage and repository

Author: marcphilipp

supplemental-ui/partials/header-content.hbs

@@ -18,5 +18,11 @@
         <span></span>
       </button>
     </div>
+    <div id="topbar-nav" class="navbar-menu">
+      <div class="navbar-end">
+          <a class="navbar-item" href="https://junit.org/">Home</a>
+          <a class="navbar-item" href="https://github.com/junit-team/junit-framework/">Repo</a>
+      </div>
+    </div>
   </nav>
 </header>