Use Jinja2 inheritance to render settings pages.

This gives us more flexibility than using {% include %}.

src/templates/users/settings/_sidebar.pug

@@ -1,10 +0,0 @@
-#settings-sidebar
-	.settings-header
-		.settings-title Settings
-	.settings-content
-		ul
-			a(class="{% if title == 'profile' %}active{% endif %}",
-				href="{{ url_for('settings.profile') }}")
-				li
-					i.pi-vcard
-					| Profile

src/templates/users/settings/base.pug

@@ -0,0 +1,29 @@
+| {% extends 'layout.html' %}
+//- Don't extend this base file directly. Instead, extend page.html so that Pillar extensions
+//- can provide overrides.
+| {% block body %}
+.container
+	#settings
+		#settings-sidebar
+			| {% block settings_sidebar %}
+			.settings-header
+				.settings-title Settings
+			.settings-content
+				ul
+					| {% block settings_sidebar_menu %}
+					a(class="{% if title == 'profile' %}active{% endif %}",
+						href="{{ url_for('settings.profile') }}")
+						li
+							i.pi-vcard
+							| Profile
+					| {% endblock settings_sidebar_menu %}
+			| {% endblock %}
+
+		#settings-container
+			.settings-header
+				.settings-title {% block settings_page_title %}{{ _("Title not set") }}{% endblock %}
+
+			.settings-content
+				| {% block settings_page_content %}No content set, update your template.{% endblock %}
+
+| {% endblock %}

src/templates/users/settings/page.pug

@@ -0,0 +1 @@
+| {% extends 'users/settings/base.html' %}

src/templates/users/settings/profile.pug

@@ -1,13 +1,6 @@
-| {% extends 'layout.html' %}
+| {% extends 'users/settings/page.html' %}
-| {% block body %}
+| {% block settings_page_title %}{{ _("Profile") }}{% endblock %}
-.container
+| {% block settings_page_content %}
-	#settings
-		| {% include 'users/settings/_sidebar.html'%}
-		#settings-container
-			.settings-header
-				.settings-title {{ _("Profile") }}
-
-			.settings-content
 .settings-form
 	form#settings-form(method='POST', action="{{url_for('settings.profile')}}")
 		.left
@@ -38,5 +31,4 @@
 			button.btn.btn-default.button-submit(type='submit')
 				i.pi-check
 				| {{ _("Save Changes") }}
-
 | {% endblock %}