Update Redeployment toolbar

• BB-3615 Update the Redeployment toolbar with new Status pill and Button design
• BB-3704 Separates out the theme colour component

Dynamically settable support link

This release allows operators to set the support link via environment variable.

Add Studio component on console, Header bugfixes

[BB-3500] Add CoursesManage component and sidebar integration
[BB-3594] Header Login button is aware of auth token

release-BB-3498

[BB-3498] Implement user menu and rework page header.

Predictable frontend deployments

This release contains CI changes for frontend deployment to be more predictable which version is out on stage and production.