Create a new action in pcbnew, gerbview and the footprint viewer/
editor to display the help documentation. Disconnect the wxID_HELP
event from the window so that it no longer conflicts with the zoom
action.
Fixes: lp:1822041
* https://bugs.launchpad.net/kicad/+bug/1822041
Put the cursor and pan control TOOL_ACTIONs in ACTION,
and refer to them in that way.
The handlers are currently identical in Pcbnew and Cvpcb,
and Gerbview (and all canvases) can benefit from them as well
if they are in libcommon. Also saves duplicated code.
Fixes: lp:1795855
* https://bugs.launchpad.net/kicad/+bug/1795855
Ian McInerney
John Beard
Maciej Suminski
jean-pierre charras
Jon Evans
Tomasz Włostowski