The previous version treats each navigation as a link, ala Chrome Settings. I liked it because I can enter a settings section directly via URL, and can always back-track each section.
Anyway, changed it to the typical "up" behavior, traversing back the hierarchy of settings pages.
All <Setting*> components will have an ID that corresponds to the sidebar link. When clicked, we scroll to the position of the card by searching for the element with the ID. It behaves simiar to # anchor navigation.
I like this model mainly because in Mobile, users don't need to keep opening the drawer to navigate -- they just need to scroll. This allows us to use the same design for Mobile and App.
