Add cms_pre_save callback to Search & Replace. bugid:111679
Update modified_by and modified_on for objects modified by Search & Replace. bugid:111679
Log every object modified by Search & Replace in activity log. bugid:111679
Need to push cloned $orig_obj onto @to_save_orig original objects array. bugid:111679
Save revision for objects modified by Search & Replace if objects are revisable and revisioning is enabled for blog. bugid:111679