Add account settings page with YouTube connection management and user update functionality

base/templates/base.html

@@ -47,7 +47,9 @@
                     <nav>
                         <ul>
                             {% if user.is_authenticated %}
-                                <li>{{ user.username }}</li>
+                                <li>
+                                    <a href="{% url "account_settings" %}">{{ user.username }}</a>
+                                </li>
                                 <li>
                                     <form action="{% url 'logout' %}" method="post">
                                         {% csrf_token %}