Simplify Group and Project creation

Merged Jay requested to merge jswain_simplify_group_creation into master

What does this MR do?

This experiment combines the group and project pages together to see if we can increase the success rate of the "first mile".

part of: #285563

Screenshots or Screencasts (strongly suggested)

after
Screen_Shot_2021-08-22_at_8.27.06_PM
Screen_Shot_2021-08-22_at_8.27.00_PM

How to setup and validate locally (strongly suggested)

  1. In rails console enable the experiment fully
    Feature.enable(:combined_registration)
  2. Visit http://localhost:3000/users/sign_up
  3. Sign Up
  4. You should now have 2 options, to create a group/project at the same time, or to create a project and import at the same time.

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

Does this MR contain changes to processing or storing of credentials or tokens, authorization and authentication methods or other items described in the security review guidelines? If not, then delete this Security section.

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team
Edited by Jay