Trebuchet: Fix fadein adjacent screens for stack transition

Change-Id: I3bda2eeddc49495c5e7c6ce11e23aa01729cfa23
JIRA: CYAN-1131
Issue: https://jira.cyanogenmod.org/browse/CYAN-1131
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1