Add support for generating a simple Web App Manifest file, which helps mobile browsers display the site smartly

lemoncurry/templates/lemoncurry/layout.html

@@ -9,6 +9,7 @@
 
 		<link rel="hub" href="{% get_push_hub %}" />
 		<link rel="self" href="{{ uri }}" />
+		<link rel="manifest" href="{% url 'wellknowns:manifest' %}" />
 
 		<meta property="og:url" content="{{ uri }}" />
 		<meta property="og:title" content="{% firstof title site_name %}" />

lemoncurry/theme.py

@@ -0,0 +1,11 @@
+from django.conf import settings
+from os.path import join
+from yaml import safe_load
+
+path = join(
+    settings.BASE_DIR,
+    'lemoncurry', 'static',
+    'base16-materialtheme-scheme', 'material-darker.yaml',
+)
+with open(path, 'r') as f:
+    theme = safe_load(f)