Update User Token Security

[MauroGuerrero20]

Features

• Important User token information removed from the Frontend
  • localStorage now only contains the expiration date of the token
• Calendar Meetings Backend can fetch the token object from Firestore

Important Note:

@steven-solar Can you make sure I didn't break your calendar meetings feature. It works for me when I tested it.

My changes are currently deployed so you can easily test it.

If you get login issues, you probably should first clear the local storage of the application first.