fix Model_Rule->grant to be able to be used for updating as well as creating new rules
MINOR add description, created, updated column to acl rule model, setup created, updated timestamp
use get_class to generate acl_id for controllers to avoid problems with routes using directories vs the complete controller name
MINOR: add empty init file to prevent filesystem stat-ing
make ORM_ACL's acl_actions properties non-static
Merge branch 'master' of gitorious.corp.dm.local:ehow-modules/acl
dynamically get acl_actions list based on public methods that have @acl tag