(It was on Footprint Defaults, which didn't make
any sense. Probably just ended up there because
there was similar code there.)
Also fixed a bug with accepting the dialog with
a grid cell editor open.
Also fixed a bug where the number of copper layers
would get set back to 2.
Also fixed a bug where the layer names weren't
getting updated in the Appearances tab.
Footprints in orgs have standard naming. We need to allow designers to
keep their standard namings outside of boards where they are fixed.
This belongs in the preferences as a set-once for local standards
This prevents the dialog growing too much and going off a
smaller screen. It's also more consistent split to match
Pcbnew, which has the same graphical items settings and
allows more granular resetting and avoids confusing settings
that only apply to new footprints with settings that apply
to items with in a footprint.
Resetting is also then more granular, so you can reset text item
defaults without, say, also resetting your default line widths.
