Use unordered lists for nav sidebar instead of definition lists

src/templates/attract/layout.jade

@@ -24,20 +24,20 @@ html(lang="en")
 		#app-main
 			#col_sidebar
 				nav.sidebar(role="navigation")
-					dl
-						dd
+					ul
+						li
 							a(href="{{ url_for('attract.index') }}",
 								title='Attract')
 								i.pi-film-thick
 						| {% if project %}
-						dd
+						li
 							a(href="{{ url_for('attract.tasks.perproject.index', project_url=project.url) }}",
 								title='Tasks for project {{ project.name }}') T
-						dd
+						li
 							a(href="{{ url_for('attract.shots.perproject.index', project_url=project.url) }}",
 								title='Shots for project {{ project.name }}') S
 						| {% else %}
-						dd
+						li
 							a(href="{{ url_for('attract.tasks.index') }}",
 								title='Your tasks') T
 						| {% endif %}