Resolves #335, #288 Interview Clean U + dedicated interview notes page

Resolves #335. Resolves #288

Sorry for the big diff - I got bored on my flight lol

Updates screenshot for README (just makes the status' of the candidates different)
Interview Detail Page (#335) - triggered by /interview/[interview id]
- Updated how interview sections are shown (reuses components in the interview page - where you actually write the notes down)
- Delete Button shown if you are the interviewer that wrote those notes
  - Does not support deletion if you are director (need to wait for auth)
Interviews in Candidate Page
- Interview Summary
  - interview round is displayed now
  - link to interview detail page added
- Interview Modal
  - View Page added per interview
Interview Page
- Dropdown picking category for a candidate has a default placeholder instead of placing the first value (Freshman - maybe)
- Split page into more components (since it was a mess; it still is but ya)
Interview Portal
- Table shows interview round and button to view interview detail page.
- Edit button disabled - for now, since edit interviews isn't supported.
Moved common interview components to /components/interview/ as part of #325

hack4impact-uiuc / h4i-recruitment