Feat: Student Sign in

[sean-dickinson]

What

• Creates a new, separate session model for students
• Duplicates the session logic but for student sessions
• Adds a base controller for admin routes that require the traditional auth
• Implements logging in via a student link on the roster page
• Adds a dummy student home page to prove that logging in works

Screenshots

Roster page with student names

Dummy "home" page for student after logging in

Closes #3