Account Registration form changes (.io, .science)

[mguidon]

https://z43.manuscript.com/f/cases/209468/Account-Registration-form-changes-io-science

### Singularity
- [ ] https://github.com/ITISFoundation/osparc-issues/issues/1849
- [ ] https://github.com/ITISFoundation/osparc-simcore/issues/7130