Working on the first-round updates for the domain settings management view.

Tweaked sidebar navigation to reflect the latest terminology use in associated views.

powerdnsadmin/templates/base.html

@@ -101,7 +101,7 @@
                         <li class="{{ 'nav-item active' if active_page == 'nav-item new_domain' else 'nav-item' }}">
                             <a href="{{ url_for('domain.add') }}" class="nav-link">
                                 <i class="nav-icon fa-solid fa-plus"></i>
-                                <p>New Zone</p>
+                                <p>Create Zone</p>
                             </a>
                         </li>
                     {% endif %}