trebuchet: fix shortcut permissions

Change-Id: I7be91884a7e0f041d7ffbdf7efdb8a33dc344d4f
JIRA: CYAN-3363
Issue: https://jira.cyanogenmod.org/browse/CYAN-3363
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "trebuchet: fix shortcut permissions" into cm-11.0