Moved css files into their own directories

[benjaminsunliu]

This pull request includes changes to both the backend and the client-side code. The most important changes involve the addition of a new dependency in the backend and the correction of CSS import paths in the client-side components.

Backend changes:

• Added nodemailer as a new dependency in backend/package.json and backend/package-lock.json. [1] [2] [3]

Client-side changes:

• Corrected the CSS import paths in multiple files to use a consistent directory structure (.//css/). This change affects the following files:
  • client/src/components/GroupForm.jsx
  • client/src/components/InstructorRatings.jsx
  • client/src/components/RatingForm.jsx
  • client/src/components/RatingList.jsx
  • client/src/components/SingleFileUploader.jsx
  • client/src/pages/Home.jsx
  • client/src/pages/InstructorDashboard.jsx
  • client/src/pages/StudentDashboard.jsx

[benjaminsunliu]

Seems like theres a conflict.. Should I close this and just redo the css file moves on next commit?

[benjaminsunliu]

This has been addressed in another pull request.