[2/2] Base: Clock on lockscreen

Allow to enable status bar clock on lockscreen (default off)

Change-Id: I6d8e1440fc2d04ec6522dbe56baafe7a110a45ea

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
Heads Up custom colors, (1/2):

Based on SlimRoms:
https://github.com/SlimRoms/frameworks_base/commit/e1932cb5cdf0d75e226d4f82bc930d660aaae136

Included:
- Custom background color, (heads up and snooze button)
- Custom background pressed color, (heads up and snooze button)
- Custom icon color, (heads up and snooze button)
- Custom text color
- Option to enable/disable colorizing the notification icon

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/drawable-hdpi/heads_up_window_bg.9.png
	packages/SystemUI/res/drawable-mdpi/heads_up_window_bg.9.png
	packages/SystemUI/res/drawable-xhdpi/heads_up_window_bg.9.png
	packages/SystemUI/res/drawable-xxhdpi/heads_up_window_bg.9.png
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java