use "is-empty" filter in views to catch empty collections (existing way didn't work anyway)

src/blarg/views/templates/files/list.html

@@ -32,7 +32,7 @@
 </div>
 
 <div class="file-list-container">
-	{% if files %}
+	{% if not files|is-empty %}
 	<table class="table table-hover table-condensed">
 		<thead>
 			<tr>

src/blarg/views/templates/posts/list.html

@@ -1,7 +1,8 @@
 {% extends "blarg/views/templates/base.html" %}
 
 {% block content %}
-{% if not posts %}
+
+{% if posts|is-empty %}
 <div>
 	<p class="text-center">There are no posts.</p>
 </div>