There's no point in having both Save Symbol and Save Library when
only one can be selected at a time.
Also cleans up a bunch of extraneous icons, and fixes a few
copy/paste errors in menus and toolbars.
Also brings horizontal toolbar in line with Pcbnew and Eeschema.
And updates the EDA_LIST_DIALOG to current practices.
This finishes the removal of the active library concept from the
Symbol Editor (started with the new component tree in 5.0).
Fixes: lp:1740717
* https://bugs.launchpad.net/kicad/+bug/1740717
The highlight colour on some platforms (OSX, for instance)
renders nearly invisible against a white background. However,
wxWidgets doesn't handle background colours on OSX and GTK+.
A separate commit to the new kicad/wxWidgets fork fixes OSX,
and we continue to use the old highlighting on GTK+
Fixes: lp:1741719
* https://bugs.launchpad.net/kicad/+bug/1741719
It turns out the fastest way to update wxDataViewCtrl is to nuke the
model and rebuild it from scratch rather than via
ItemAdded()/ItemDeleted() update notifications.
Fixes: lp:1734773
* https://bugs.launchpad.net/kicad/+bug/1734773
Jeff Young
jean-pierre charras
Maciej Suminski
Tomasz Włostowski