RHIDP-5490: Configure global header in RHDH#954

Gerry-Forde merged 20 commits intoredhat-developer:mainredhat-developer/red-hat-developers-documentation-rhdh:mainfrom

jmagak:RHIDP-5490-Document-how-to-enable-disable-and-configure-global-header-in-RHDHjmagak/red-hat-developers-documentation-rhdh:RHIDP-5490-Document-how-to-enable-disable-and-configure-global-header-in-RHDHCopy head branch name to clipboard