This was the behavior before the factoring out of COMPONENT_TREE. Moving
the history at the top just required inserting it at the right point;
fixing preselect involved wxEVT_INIT_DIALOG not propagating to the
panel. Simple solution was to move the parts of that event handler to
the constructor as they didn't have to be in an event handler anyway.
Fixes: lp:1707538
* https://bugs.launchpad.net/kicad/+bug/1707538
Chris Pavlina
jean-pierre charras
Maciej Suminski