Bug 971452 - [System2] Instantiable ActivityWindowFactory
Bug 921723 - Move the progress indicator on the below of time-header.
Bug 941484 - [System2] Fix bootstrap test ordering
Merge pull request #16359 from evanxd/bug-921723

Bug 921723 - Sync progress indicator persists onto day view
Merge pull request #16384 from KevinGrandon/bug_941484_follow_up

Bug 941484 - [System2] Fix bootstrap test ordering
Merge pull request #16356 from luke-chang/971452_instantiable_activity_window_factory

Bug 971452 - [System2] Instantiable ActivityWindowFactory, r=alive