FW: LS Notifications: Add "Show all notif" NavBar Button

from: https://github.com/AOSPAL/android_frameworks_base/commit/4325a110af58e6b1c7e1005a9f1f2576bbad5e60

PS2: message & Author update
PS3: Rebased & remove unrelated changes

Change-Id: I67456db4f9728fefbabc9da9c290d070021705b4