Minor updates on AAI connected centres
- re-referencing on the original sources of "AAI-connected centres"
- minor correction w.r.t "users in Unity"
- dashed lines where trends could only be approximated retrospectively
From December 8 to December 10 the underlying cloud platform running GitLab CI jobs is being extended and thus, is unavailable. We do our best to compensate this with other resources but it might happen that you experience extended startup times for your CI jobs. Thanks for your understanding!