Add evening time to header

Scaled all images

Change-Id: I5d9a41d92803d64f67cf2fb9dd2c4294a947efc3

Conflicts:
	packages/SystemUI/res/drawable-hdpi/notifhead_afternoon.jpg
	packages/SystemUI/res/drawable-hdpi/notifhead_christmas.jpg
	packages/SystemUI/res/drawable-hdpi/notifhead_evening.jpg
	packages/SystemUI/res/drawable-hdpi/notifhead_morning.jpg
	packages/SystemUI/res/drawable-hdpi/notifhead_newyearseve.jpg
	packages/SystemUI/res/drawable-hdpi/notifhead_night.jpg
	packages/SystemUI/res/drawable-xhdpi/notifhead_afternoon.jpg
	packages/SystemUI/res/drawable-xhdpi/notifhead_christmas.jpg
	packages/SystemUI/res/drawable-xhdpi/notifhead_evening.jpg
	packages/SystemUI/res/drawable-xhdpi/notifhead_morning.jpg
	packages/SystemUI/res/drawable-xhdpi/notifhead_newyearseve.jpg
	packages/SystemUI/res/drawable-xhdpi/notifhead_night.jpg