Initial attempt at using Service Worker

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

requirements.txt

@@ -1,6 +1,5 @@
 Django>=1.8,<1.9
 django-bootstrap-form==3.1
-django-compressor==1.4
 django-extensions==1.5.9
 django-widget-tweaks==1.3
 facebook-sdk==0.4.0