Updated default whitelist

Ideally, the default whitelist will work seamlessly with google
products.
Added status icons to options

	modified:   chrome-bootstrap-overrides.css
	new file:   icon_aok_19px.png
	new file:   icon_questionmark_19px.png
	new file:   icon_warn_19px.png
	new file:   icon_x_19px.png
	modified:   manifest.json
	modified:   options.html