1) Remove Imports Csla.Properties 2) Implemented INotifyBusy members
1) Remove Imports Csla.Properties
2) Implemented INotifyBusy members

bugid: 310


jonnybee/csla,rockfordlhotka/csla,MarimerLLC/csla,JasonBock/csla,BrettJaner/csla,ronnymgm/csla-light,ronnymgm/csla-light,rockfordlhotka/csla,ronnymgm/csla-light,MarimerLLC/csla,JasonBock/csla,rockfordlhotka/csla,BrettJaner/csla,BrettJaner/csla,JasonBock/csla,jonnybee/csla,MarimerLLC/csla,jonnybee/csla