SystemUI: make clock and time clickable in statusbar

Clicking clock opens alarms, clicking the date will open the calendar.

Change-Id: I622527c1f144a8867aa543348b70a4fefe3f6403
Signed-off-by: Roman Birg <roman@cyngn.com>
SystemUI: add Weather display to status bar header

Change-Id: Ic2fea861c36f405d8a0e64cc9224f47088ac6351
Signed-off-by: Roman Birg <roman@cyngn.com>