{% load staticfiles %}

<!doctype html>
<html>
 <head>
  <meta charset="utf-8">
  <title></title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700' rel='stylesheet' type='text/css'>
  <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
  <link rel="stylesheet" href="{% static "css/reset.css" %}">
  <link rel="stylesheet" href="{% static "css/main.css" %}">
 </head>

 <body>

  <div id="nav-bar">
   <div>
    <a href="">
     gpodder.net
    </a>

    <input type="search" name="q" placeholder="Search" />

    <a href="">
     Discover
    </a>

    <a href="">
     Subscriptions
    </a>

    <a href="">
     Account
    </a>
   </div>
  </div>


  <div id="content">

   {% block content %}{% endblock content %}

  </div>

  <footer>
   gpodder.net
  </footer>
 </body>
</html>

{% load static %}

<!doctype html>
<html>
 <head>
  <meta charset="utf-8">
  <title></title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700' rel='stylesheet' type='text/css'>
  <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
  <link rel="stylesheet" href="{% static "css/reset.css" %}">
  <link rel="stylesheet" href="{% static "css/main.css" %}">
 </head>

 <body>

  <div id="nav-bar">
   <div>
    <a href="">
     gpodder.net
    </a>

    <input type="search" name="q" placeholder="Search" />

    <a href="">
     Discover
    </a>

    <a href="">
     Subscriptions
    </a>

    <a href="">
     Account
    </a>
   </div>
  </div>


  <div id="content">

   {% block content %}{% endblock content %}

  </div>

  <footer>
   gpodder.net
  </footer>
 </body>
</html>

Use {% load static %} instead of {% load staticfiles %}
Use {% load static %} instead of {% load staticfiles %}

the latter one is deprecated, see
https://docs.djangoproject.com/en/dev/releases/2.1/#features-deprecated-in-2-1
