Lockscreen Notifications: make animations a bit faster

Change-Id: Ib780ddfa728d70c559f22976a77090b1ddfb2562
Fix ongoing notifications reappearing when hidden

& some small animation tweaks again.

Change-Id: Ib866540e6af6cfc21bbb5db6e28aa3eced64e96d
Partly fix lockscreen blur rotation issue

This works very well when changing rotation from portrait to landscape and vice versa but doesn't work when changing rotation from landscape to landscape (90 to 270 deg) or portrait to portrait (0 to 180 deg) because we don't get notified of such changes.

Change-Id: Id4d9b4a6ce061fdb4767a8cb12dd7a8d33c99175