#53 wxAUI manager support for any wxPanel

[dman-78]

Hi, big fan of wxFB.
So I have a project that consists of just one main wxFrame. Would it be possible to make it so that any wxPanel (not just the onces created at the root of the project) can have the wxAUI managed behavior? I can get around this somewhat by creating wxPanel objects at the root within the same project but then accessing the controls and handling the events in the wxPanel is difficult from the wxFrame.