templates: rename nav block to breadcrumbs

assets/templates/repo/base.html

@@ -93,9 +93,9 @@
 	<span>
 		viewing
 		<span class=linkedPath>
-			{% block nav %}
+			{% block breadcrumbs %}
 				<a href="/">{{ owner }}</a>/<a href="/">{{ repo }}</a>
-			{% endblock nav %}
+			{% endblock breadcrumbs %}
 		</span>
 	</span>
 	<ul class=buttonList>

assets/templates/repo/code.html

@@ -2,10 +2,9 @@
 
 {% block page %}code{% endblock page %}
 
-
-{% block nav %}
+{% block breadcrumbs %}
 	<a href="/">{{ owner }}</a>/<a href="/">{{ repo }}</a>/<a href="/">{{ branch }}</a>
-{% endblock nav %}
+{% endblock breadcrumbs %}
 
 {% block content %}
 <div id=contentWrap>