Add missing nav class

Author: PaladinDev

_navbar.blade.php

@@ -11,7 +11,7 @@
  </div>
 
  <div class="collapse navbar-collapse" id="navbarCollapse">
- <ul class="navbar-nav mr-auto">
+ <ul class="navbar-nav nav">
  @if (isset($menu))
  @foreach ($menu as $link)
  @if (array_key_exists('links', $link))