Remove doubled-up padding on the divider links, add explicit flex align to the brand row

ps-3 stacked on top of nav-link's own padding made the gap after the
border look uneven -- nav-link's built-in padding is enough on its own.

views/_navbar.erb

@@ -1,5 +1,5 @@
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <div class="container-fluid">
+  <div class="container-fluid d-flex align-items-center">
     <a class="navbar-brand" href="/">Print server</a>
     <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
@@ -10,7 +10,7 @@
           <a class="nav-link <%= 'active' if request.path == '/' %>" href="/">Home</a>
         </li>
         <li class="nav-item">
-          <a class="nav-link border-start ps-3 <%= 'active' if request.path.start_with?('/brother') %>" href="/brother">Brother</a>
+          <a class="nav-link border-start <%= 'active' if request.path.start_with?('/brother') %>" href="/brother">Brother</a>
         </li>
         <li class="nav-item">
           <a class="nav-link <%= 'active' if request.path == '/upload' %>" href="/upload">Shipping labels</a>
@@ -19,7 +19,7 @@
           <a class="nav-link <%= 'active' if request.path == '/epson' %>" href="/epson">Receipts</a>
         </li>
         <li class="nav-item">
-          <a class="nav-link border-start ps-3 <%= 'active' if request.path.start_with?('/labels') %>" href="/labels">Labels</a>
+          <a class="nav-link border-start <%= 'active' if request.path.start_with?('/labels') %>" href="/labels">Labels</a>
         </li>
       </ul>
       <% if request.path.start_with?('/brother') %>