removed the cloning of additonalData from PerformDeepClone
removed the cloning of additonalData from PerformDeepClone

umbraco/Umbraco-CMS,abryukhov/Umbraco-CMS,dawoe/Umbraco-CMS,JimBobSquarePants/Umbraco-CMS,abryukhov/Umbraco-CMS,JimBobSquarePants/Umbraco-CMS,arknu/Umbraco-CMS,robertjf/Umbraco-CMS,abjerner/Umbraco-CMS,robertjf/Umbraco-CMS,dawoe/Umbraco-CMS,marcemarc/Umbraco-CMS,JimBobSquarePants/Umbraco-CMS,abjerner/Umbraco-CMS,arknu/Umbraco-CMS,dawoe/Umbraco-CMS,marcemarc/Umbraco-CMS,umbraco/Umbraco-CMS,JimBobSquarePants/Umbraco-CMS,umbraco/Umbraco-CMS,KevinJump/Umbraco-CMS,abjerner/Umbraco-CMS,KevinJump/Umbraco-CMS,abryukhov/Umbraco-CMS,marcemarc/Umbraco-CMS,dawoe/Umbraco-CMS,JimBobSquarePants/Umbraco-CMS,robertjf/Umbraco-CMS,abjerner/Umbraco-CMS,marcemarc/Umbraco-CMS,arknu/Umbraco-CMS,marcemarc/Umbraco-CMS,KevinJump/Umbraco-CMS,KevinJump/Umbraco-CMS,arknu/Umbraco-CMS,KevinJump/Umbraco-CMS,abryukhov/Umbraco-CMS,robertjf/Umbraco-CMS,robertjf/Umbraco-CMS,dawoe/Umbraco-CMS,umbraco/Umbraco-CMS