Create dashboard package for Riff Platform

[adonahue]

Stage 2 of our refactor is to take the cleaned up code for Riff Video and Riff Dashboard and package it up so it's truly modular and can be called/included from other places, like Riff EDU. The goal is to have a single code base to improve maintainability of the code. This is a new area of work for Riff, and so it is assumed that the first package may have a steep learning curve.

Story Acceptance Criteria

• A packaged version of the dashboard code that is integrated into Riff Platform, and maintains the same features and functionality to the existing version (staging?) of Riff Platform.

[jaedoucette]

This involves:

1): Making an NPM package for dashboard. 2): Use the new NPM package in RiffPlatform, but do NOT modify RiffEDU.

[jaedoucette]

We think there's probably a mess resolving the redux dependencies here.