Support and development process
Added google doc Support and Development process because of https://dev.gitlab.org/gitlab/organization/issues/190#note_45941
Added a link to this doc in "Sales onboarding"
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Added google doc Support and Development process because of https://dev.gitlab.org/gitlab/organization/issues/190#note_45941
Added a link to this doc in "Sales onboarding"