Bug 1015388 - [Contacts] Implement new startup loading events
Bug 1038185 - Fix transition when closing utility tray. r=etienne
Merge pull request #21704 from Cwiiis/bug1038185-close-utility-tray-transition

Bug 1038185 - Fix transition when closing utility tray. r=etienne
Merge pull request #21453 from arcturus/bug-1015388

Bug 1015388 - [Contacts] Implement new startup loading events
Revert "Merge pull request #21423 from TheoChevalier/bug-1028808-inconsistency-homescreen"

This reverts commit b41c4a8f90e80501a4095c232e79016b2bc196ea, reversing
changes made to 6e651273309d69c0f222cfbceee53b741b91b9bd.