Fix UID Entry Flow

[rishabnayak]

Describe the bug
UID Entry gives no feedback, but redirects to Home, need to work on a better UX, to give feedback that it was successful. Additionally check if the right UID was entered, some data check required.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://team-synergy-bu.firebaseapp.com/'
2. Login
3. Click on 'My Profile'
4. Enter Hackathon UID
5. Bug

Expected behavior
Some feedback loop.

Desktop (please complete the following information):
All

Smartphone (please complete the following information):
All