Minor tweak to ACL::user_can() to use a user ID, if supplied, rather  than instantiating a full user object.  If given a username, or a user  object, the method will work as expected, too.
Minor tweak to ACL::user_can() to use a user ID, if supplied, rather 
than instantiating a full user object.  If given a username, or a user 
object, the method will work as expected, too.



git-svn-id: d0e296eae3c99886147898d36662a67893ae90b2@1344 653ae4dd-d31e-0410-96ef-6bf7bf53c507

dragonmantank/Habari,dragonmantank/Habari,dragonmantank/Habari