Fix permissions on reviewday directories

Reviewday home and git repository directories were owned by root,
fix those permissions and make http directory executable.

Change-Id: I3ae856a3c1ffa13d9f8a7217284d89d8035f2613
Reviewed-on: https://review.openstack.org/25424
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins