Implement Left Nav variation.

[jason-capsule42]

Is your feature request related to a problem? Please describe.

Design work has been completed per ticket #6

Describe the solution you'd like

Updated design work for mobile to be implemented into component.

[blackfalcon]

The experience described in the design documents eludes to a accordion style UI. @leeejune what is the expected priority of the side-nav functionality?

Question for the group. I wonder if there is an opportunity to create a baseline accordion that can be extended into the side-nav so as not to duplicate this as a feature.

[leeejune]

@blackfalcon I think @braven112 might have an answer to that more than I do.

The base accordion has been documented in a blueprint around a year ago. If we want to move on with that, we have things ready for it. Also, I've been working with designers on a redesign: just a heads up!