[Feature Request] Make whitespace error for student number during sign up clearer

[phoenixpereira]

Overview

Whitespace is not automatically removed for student number during sign up and just shows generic invalid student number error.

Details

Add extra check for whitespace and either exclude whitespace automatically or add a different error saying there's whitespace.

Why would this feature be useful?

So that people signing up can better understand the invalid student number error.

Additional Notes

You would need to edit StepTwo.tsx to either automatically remove the whitespace or show an error to the user to fix this issue.

[rayokamoto]

Could not reproduce, and the regex is working fine and the stored student IDs in the database are as expected. Not sure how this issue arose.

[phoenixpereira]

Updated title and description to better reflect issue.