Project size limit license check

Related to https://gitlab.com/gitlab-org/gitlab-ee/issues/2335

Limits should not function if the EE server doesn't have a license.

Note this does not apply to GitLab.com groups as this is an administrative server-wide setting

changed milestone to %9.5

added Deliverable label

Introduced in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/740

assigned to @rdavila

created branch 2848-project-size-limit-license-check

mentioned in merge request !2429 (merged)

closed via merge request !2429 (merged)

mentioned in commit b6271133