[Refactor] Create a base settings page

This will make it easier to add new settings pages for e.g. privacy settings, applications,
etc. later.

calsocial/templates/settings-base.html

@@ -0,0 +1,10 @@
+{% extends 'base.html' %}
+
+{% block content %}
+<nav>
+    <ul>
+        <li><a href="{{ url_for('edit_profile') }}">{% trans %}Edit profile{% endtrans %}</a></li>
+        <li><a href="{{ url_for('settings') }}">{% trans %}Settings{% endtrans %}</a></li>
+    </ul>
+</nav>
+{% endblock %}

calsocial/templates/user-settings.html

@@ -1,6 +1,8 @@
-{% extends 'base.html' %}
+{% extends 'settings-base.html' %}
 
 {% block content %}
+{{ super() }}
+<h2>{% trans %}Settings{% endtrans %}</h2>
 <form method="post">
     {{ form.hidden_tag() }}