* [Portfolio Graph] Shows a graph of the portfolio value over time
* [PortfolioGraph] Fix some nits.
* [PortfolioGraph] Comment out portfolio-value-section
Hides the component completely for now, so we can land today. My plan would be to land today, wait for the history to build up, and then revert this commit. As opposed to leaving the PR idle for a while, and then have to deal with conflicts.
* [PortfolioGraph] Rm duplicate firestore rule
