added angular as a built in concated dependency
namespacing css, included changes file full of detailed modifications
Add attribution directive

Created a new directive for attribution on our widgets.
This gives us the flexibility to use it on a 1 per data case, or multiple.
Still needs a link out api
Set up linking and restyled within link
Merge branch 'css_namespacing' into usa_today_widgets

Conflicts:
	widgets/src/templates/scoreboard.html