Move frontend to React SPA

[daviesgeek]

Bugs reported/seen so far:

• [x] Map isn't loading (sometimes?)
• [x] Chat needs to be ordered by timestamp and sliced at a fixed number from the backend
• [ ] Node neighbors aren't loading the target node (just shows UNK)

[daviesgeek]

• [ ] Chat needs to be ordered by timestamp and sliced at a fixed number from the backend
• [ ] Map node statuses seem to be broken atm
• [ ] Map still stays dark mode when light mode is selected
• [ ] Change theme selector to light/dark/auto icons

[daviesgeek]

• [ ] Node page telemetry icons aren't showing up in dark mode