overhaul a lot of stuff

[ItzDerock]

changes:

• replaces a lot of margin bottoms with flex and gaps on parent (reduce repeated mb={...})
• uses react-query for api requests
• redesign stat cards
• redesign stat page
  • now with cool graphs!
• change upload text input height to match with remaining space on screen (so you dont need to scroll and hit upload)

[superintendent2521]

pog