Initial attempt at using Service Worker

- Caches facebook profile pictures and static resources
- Removes django-compressor and commited bower_components
- rest fixes

static/dist/sw/sw-toolbox-config.js

@@ -0,0 +1,12 @@
+toolbox.router.get('/(.*)/picture/', toolbox.fastest, {
+    origin: /^https:\/\/graph\.facebook\.com$/
+});
+
+//var MISSING_IMAGE = '/static/dist/images/unknown_person.png';
+//toolbox.cache(MISSING_IMAGE);
+//
+//function imageHandler(request, values, options) {
+//    return toolbox.cacheFirst(request, values, options).catch(function () {
+//        return caches.match(MISSING_IMAGE);
+//    });
+//}