Remove the old CVS $Id: tags.
They don't work in git, and don't work by default in SVN either.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75847 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
change docset names, add icons

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75848 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Not really the right place for it, but add an icon for the wxWidgets docset

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75849 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775