Recents minor issue

Foreground app was listed and killed when pressing "Clear all"

There is still a minor issue where foreground app is moved to background
when swiping/pressing on an empty space in the recents list (but not killed). Seems that
reason for this is that HOME activity is started.

Change-Id: Ica8f7d4da3605fe271c15d70101adcd70dc40d05