Use a local copy of font awesome instead of a CDN (#429)

bakerydemo/templates/base.html

@@ -24,7 +24,7 @@
         {% endif %}
 
         <link rel="stylesheet" href="{% static 'css/bootstrap.min.css' %}">
-        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha512-SfTiTlX6kk+qitfevl/7LibUOeJWlt9rbyDn92a1DqWOw9vWG2MFoays0sgObmWazO5BQPiFucnnEAjpAB+/Sw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
+        <link rel="stylesheet" href="{% static 'css/font-awesome.min.css' %}">
         <link rel="stylesheet" href="{% static 'css/font-marcellus.css' %}">
         <link rel="stylesheet" href="{% static 'css/font-open-sans.css' %}">
         <link rel="stylesheet" href="{% static 'css/main.css' %}">