* add referral field to sign up form
* Added referral info
* fix ui issues
* clean referral before post
* send referral info on verifyOTT
* add ":web" suffix to referral
* fix copy
* Add `web:` as prefix
* Update param name during verify-email
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Co-authored-by: Neeraj Gupta <neeraj.gupta983@gmail.com>