Big UI Merge to Happen THIS FRIDAY

[wwahammy]

Hey all, we're worked a ton over the last year of getting our usage of Material UI and React going. The first page we're working on is the Sign In page. Assuming I get approvals from @clarissalimab, I intend to merge this giant PR on this Friday, October 15, around mid-day US Central.

While there are, undoubtedly, fixes and tweaks that need to be made, I think it's functional enough that it's in everyone's best interest to get this code out there so people can build off of Material UI going forward.

If you have any opposition to this plan, please say so here or on the PR