Add possiblity to share gallerie with public link

photo21/templates/base.html

@@ -37,6 +37,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
             </button>
             <div class="collapse navbar-collapse" id="navbarSupportedContent">
                 <ul class="navbar-nav me-auto mb-2 mb-lg-0">
+                    {% if request.user.is_authenticated %}
                     <li class="nav-item">
                         {% url 'photologue:pl-gallery-archive' as url %}
                         <a class="nav-link {% if request.path_info == url %}active{% endif %}" href="{{ url }}">{% trans 'Galleries' %}</a>
@@ -52,6 +53,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
                         <a class="nav-link" href="{% url 'admin:index' %}">{% trans 'Manage' %}</a>
                     </li>
                     {% endif %}
+                    {% endif %}
                 </ul>
                 <ul class="navbar-nav">
                     {% get_available_languages as LANGUAGES %}