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>

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java
Clear Recent Apps (From NavBar)

Original author: TheMrcool212

PA Style Clear All Button

TODO :
- Add material design drawables
- Add better clearing animation(scroll up and scroll down while clearing)

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java