GUI-1298: Allow bucket/object ACLs to be assigned by account/canonical ID and email address
GUI-1298: Use ACL methods to add email or id grants for bucket/object sharing policy editor
updated label, bubble help text and indentation of sharing panel manual sharing stuff
Merge pull request #990 from eucalyptus/GUI-1298

GUI-1298: Allow bucket/object ACLs to be defined by ID and email address