Add nikshay_code to agency registration page
Add nikshay_code to agency registration page

https://trello.com/c/TF0D72uv/286-allow-non-mandatory-fields-in-the-agency-registration-page

dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq