Fix Sanitisation on Passwords

What does this MR do and why?

Encodes path with base64 to avoid browser encoding on bare string. This was causing some symbols to be changed resulting in a bad password.

Resolves #362 (closed)

How to set up and validate locally

Try to login with (-l1O/"K=GuelUzK>Nmuq,/1j#^7]hje6]0\DB'pv:?`fFC-

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• Have you checked this doesn't interfere/conflict/duplicate someone elses work?
• Have you fully tested your changes?
• Have you resolved any lint issues?
• Have you assigned a reviewer?
• Have you applied correct labels?