[TODO] Front-end changes

[Lloyd26]

Here are some changes that are yet to be implemented before working for Phase 2 (back-end). Note: Tasks that are marked with an asterisk (*) can be done during the development for Phase 2 and does not necessarily need to delay the project.

• [x] * Add light/dark mode toggle switch, Replace notifications/alerts button to light/dark mode toggle switch
• [x] Fix layout of sign-up page
• [ ] Make profile posts/comments switcher to tabs instead of separate pages
• [x] Add profile settings page

[Lloyd26]

✅ "Add profile settings page" task marked as done through commit e5cea3f.