Revert "Bug 1048953 - Disable test_new_event_appears_on_all_views on TBPL due to bug 1048953 a=testonly"

This reverts commit 1cbb253e32670a61cd8b7245877a9ed762d3b715.
Revert "Bug 1042032 - Disable test_gallery_view until dwong fixes the phones."

This reverts commit bdc0f48ba27d37594598664993c80b88291a3d6c.