Use style sheet when copying to the clipboard if available


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@76244 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Removed unnecessary list renumbering


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@76267 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775