fixed navbar, profilepage and backend routing

[aahmed33]

• Fixed navbar to correctly route between studentDashboard and instructorDashboard
• Fixed profilePage to correctly update a Student or Instructor's information
• Fixed a minor issue with value setting in Instructor route
• Deleted unused files
• added a local storage indicator to identify a user's login

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1 Ignored Deployment

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **learning-management-system-f** | ⬜️ Ignored ([Inspect](https://vercel.com/davidpogosians-projects/learning-management-system-f/65YVBoHVWK3MjmgBZD4gYDvao7uz)) | [Visit Preview](https://learning-management-system-f-git-8281f1-davidpogosians-projects.vercel.app) | | Dec 5, 2023 10:54pm |