wxDataViewCtrl used an incorrect column type, which made wxWidgets try
to extract wxDataViewIcon from an integer variable.
Fixes: lp:1782449
* https://bugs.launchpad.net/kicad/+bug/1782449
Also includes a bunch of changes to simplifiy the terminology
and unify the copper, non-copper and keepout versions.
Also removes some legacy features:
Removes contol for fill method. If the fill method is currently
segments the dialog will ask if you want to convert to polygons
on OK.
Removes control of boundary resolution. We've done this with trig
since 5.0.
(cherry picked from commit 487aaeb)