diff --git a/demo/cabaret.py b/demo/cabaret.py
index b965834..ed59c5c 100755
--- a/demo/cabaret.py
+++ b/demo/cabaret.py
@@ -58,4 +58,5 @@ else:
     add_w_builtin()
     app.wsgi_app = WdbMiddleware(app.wsgi_app, start_disabled=True)
 
-app.run(debug=True, threaded=True, host='0.0.0.0', port=12221)
+if __name__ == '__main__':
+    app.run(debug=True, threaded=True, host='0.0.0.0', port=12221)
diff --git a/demo/cabaret/templates/_layout.jinja2 b/demo/cabaret/templates/_layout.jinja2
index b505fc9..f1d3307 100644
--- a/demo/cabaret/templates/_layout.jinja2
+++ b/demo/cabaret/templates/_layout.jinja2
@@ -4,8 +4,8 @@
     <title>Cabaret - Online pygal graph generator</title>
     <script type="text/javascript" src="{{ url_for('static', filename='components/jquery/jquery.js') }}"></script>
     <script type="text/javascript" src="{{ url_for('static', filename='components/bootstrap/docs/assets/js/bootstrap.min.js') }}"></script>
-    <script type="text/javascript" src="http://kozea.github.com/pygal.js/javascripts/svg.jquery.js"></script>
-    <script type="text/javascript" src="http://kozea.github.com/pygal.js/javascripts/pygal-tooltips.js"></script>
+    <script type="text/javascript" src="http://kozea.github.io/pygal.js/javascripts/svg.jquery.js"></script>
+    <script type="text/javascript" src="http://kozea.github.io/pygal.js/javascripts/pygal-tooltips.js"></script>
     <script type="text/javascript" src="{{ url_for('static', filename='js.js') }}"></script>
     <link rel="stylesheet" href="{{ url_for('static', filename='components/bootstrap/docs/assets/css/bootstrap.css') }}" type="text/css" />
     <link rel="stylesheet" href="{{ url_for('static', filename='css.css') }}" type="text/css" />
diff --git a/pygal/config.py b/pygal/config.py
index bde5b79..6b5cbf3 100644
--- a/pygal/config.py
+++ b/pygal/config.py
@@ -303,6 +303,10 @@ class Config(CommonConfig):
         "%Y-%m-%d %H:%M:%S.%f", str, "Label",
         "Date format for strftime to display the DateY X labels")
 
+    missing_value_fill_truncation = Key(
+        "x", str, "Look",
+        "Filled series with missing x and/or y values at the end of a series are closed at the first value with a missing 'x' (default), 'y' or 'either'")
+
     # Value #
     human_readable = Key(
         False, bool, "Value", "Display values in human readable format",
@@ -382,8 +386,8 @@ class Config(CommonConfig):
 
     # Misc #
     js = Key(
-        ('http://kozea.github.com/pygal.js/javascripts/svg.jquery.js',
-         'http://kozea.github.com/pygal.js/javascripts/pygal-tooltips.js'),
+        ('http://kozea.github.io/pygal.js/javascripts/svg.jquery.js',
+         'http://kozea.github.io/pygal.js/javascripts/pygal-tooltips.js'),
         list, "Misc", "List of js file",
         "It can be a filepath or an external link",
         str)
diff --git a/pygal/ghost.py b/pygal/ghost.py
index 7e1dab6..db9e4fd 100644
--- a/pygal/ghost.py
+++ b/pygal/ghost.py
@@ -142,6 +142,11 @@ class Ghost(object):
         """Render the graph, and return a Flask response"""
         from flask import Response
         return Response(self.render(**kwargs), mimetype='image/svg+xml')
+        
+    def render_django_response(self, **kwargs):
+        """Render the graph, and return a Django response"""
+        from django.http import HttpResponse
+        return HttpResponse(self.render(**kwargs), mimetype='image/svg+xml')
 
     def render_to_file(self, filename, **kwargs):
         """Render the graph, and write it to filename"""
diff --git a/pygal/graph/line.py b/pygal/graph/line.py
index 8226f1e..65e92f2 100644
--- a/pygal/graph/line.py
+++ b/pygal/graph/line.py
@@ -56,11 +56,21 @@ class Line(Graph):
 
         # Check to see if the data has been padded with "none's"
         # Fill doesn't work correctly otherwise
-        end = -1
-        for i, (x, y) in enumerate(reversed(values)):
-            if x is not None:
-                end = -1 - i
-                break
+        end = len(values)-1
+        while end > 0:
+            x, y = values[end]
+            if self.missing_value_fill_truncation == "either":
+                if x is not None and y is not None:
+                    break
+            elif self.missing_value_fill_truncation == "x":
+                if x is not None:
+                    break
+            elif self.missing_value_fill_truncation == "y":
+                if y is not None:
+                    break
+            else:
+                raise ValueError("Invalid value ({}) for config key 'missing_value_fill_truncation'; Use 'x', 'y' or 'either'".format(self.missing_value_fill_truncation))
+            end -= 1
 
         return ([(values[0][0], zero)] +
                 values +