Start widget.

Conflicts:
	bill/views.py
Consolidate boxes, remove unnecessary code, and make the widget fit its container as best it can.
Add title and logo, make links open in a new browsing context, and improve styling.
Detab and remove trailing whitespace.
Make bill widget embeddable via script.
tweaks to the bill widget
more tweaks for deplying the widget and getting it on the bill page
Merge branch 'bill-widget'