Add frontend UI for viewing Index Fund's performance

[acmeyer]

Since the app makes it easy to host the Index Fund on a server and uses Parse Server on the backend, it would be nice to set up a frontend UI that could be accessible on the web to view the Index Fund's performance. This would likely require some backend additions as well like the ability to pull relevant information like orders executed and current/past market caps in order to calculate the Index Fund's return.

Some ideas for what the UI might be like:

• chart showing returns over time, filterable between 1d, 1w, 1m, 1y, and all-time
• table showing returns over time
• downloadable csv file of trades and returns