1) Keep the sidebar always visible;
2) Put the search stuff on the scrolling header;
3) Implement accordion-style JavaScrip stuff to show/hide user-contributed samples;
4) Minor clean-ups.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@71087 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
