Keep on notification LED while dreaming.

Change-Id: I407e34f9c60d3140f78abca133b4fda5dd45f311
JIRA:CYAN-689
Merge "Keep on notification LED while dreaming." into cm-10.1
Improve scrolling cache

Scrolling cache helps make short scrolls/flings smooth but will
cause stutter when long flings are made. This patch disables
scrolling cache when long flings are made.

This patch also fixes a related bug where scrolling cache will
not be enabled properly when transitioning from flinging to scrolling.

Patch Set 2: Calculate threshold based on maximum velocity (Sang Tae Park)

Credits: Pawit Pornkitprasan

Change-Id: I532dba6bf8c0411092f80a7e0ceca1c0f9ae873a
don't refresh view when item checked changed

Change-Id: I4358dfad5c57bf344374b9640d9d9cb6be0ffcf8
Merge branch 'cm-10.1' into martincz