If the user does not build the GITHUB plugin (deprecated), we cannot use
it in our footprint load and should remove the define to ensure
accidental use is caught at compile time.
Spooling up a full PLAYER in the background takes too long.
This also fixes bugs around how the tables are saved, although
that was just missing code rather than anything architectural.
Fixes: lp:1785436
* https://bugs.launchpad.net/kicad/+bug/1785436
This also fixes a bunch of bugs where an error during save would
still close the window (rather than cancelling the close action).
Fixes: lp:1785034
* https://bugs.launchpad.net/kicad/+bug/1785034