[Portal Pajamas] Update the portal top NavBar to more closely resemble Gitlab's

Problem

The customer portal navigation doesn't resemble the navigation in the GitLab application.

Proposal

Update the navigation per design specs to more closely resemble the navigation of the GitLab.

image

Design Specs

Menu item Target page
Logo /
Manage Purchases /manage-purchases
View Invoices /invoices
? Icon It's a dropdown. No link here.
FAQ https://about.gitlab.com/pricing/licensing-faq/
Support https://about.gitlab.com/support/#contact-support
Contact Us https://support.gitlab.com/hc/en-us/requests/new?ticket_form_id=334447
Submit feedback https://about.gitlab.com/submit-feedback/
My account It's a dropdown. No link here.
CUSTOMER_NAME No link here.
Account details /customers/edit
Payment methods /payment_methods
Sign Out /customers/sign_out

How will we measure success?

The customer portal provides a similar navigation experience as the GitLab application

Edited by Tim Noah