New navbar: Customization on private instances

Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.

• Close this issue

The new navbar needs to be customizable on private instances. Logo is already customizable. Label next to the logo and background color of the new navbar should be configurable too.

It significantly helps to distinguish a private instance from the public Gitlab.org.

Related issues:

• gitlab-ce#32794