added param to make lollipop scale with carbs

@jebeck or @nicolashery Small change to make add param to make lollipop scale with carbs
So, I remember I almost put this in once, and then I remembered this: http://facebook.github.io/react/tips/props-in-getInitialState-as-anti-pattern.html

Hence why I access the param for showbasalsettings in `componentWillMount` instead.

@nicolashery do you have an opinion on this?