Apply Jeff's revamped CSS to a working version of the entire appication

Jeff made a demo for a much nicer looking (and better designed architecturally) version of the app that mostly focused on login and registration. Need to apply this new design philosophy (at both a surface level and code level) to the rest of the app so that everything can be integrated easily. There are a few major things to do:
1. Replace all affected screens (login, registration, and the change of the navbar)
2. Find a way to use his redux system to apply to the rest of the screens (at least at the level of showing up).
3. Ensure the redux store contains pertinent information that can be gleaned from Login/Registration (user type, logged in or not, etc.)

Note that this issue does not involve improving other screens directly. It will all be merged in by other contributors.