[FULLSTACK] Users Bug Fixes

[jaynagpaul]

Description

We've done a really great job this semester, and the product has made ENORMOUS improvements from its initial state. Now its time to polish it up and put on the final set of bug fixes and changes.

This ticket will be focused on the User and Users pages.

Acceptance Criteria

• Ensure error messages do not persist on the User page without user action.
• Add error handling for adding a user with an email that already exists and other invalid operations on the Users page.
• Instead of a dedicated edit button, we want the entire row to be clickable / grayed on hover
• Implement a logout functionality.
• Remove the unnecessary gear icon on the Users page.

Notes

• Don't hesitate to reach out for clarification / help / to get feedback on anything!