CHANGED: Cvpcb fpviewer and the pcbnew fpviewer no longer have an options dialog
ADDED: Add a side toolbar to the pcbnew footprint viewer (and the measure tool)
This also cleans up some of the settings structs in the viewers, since
it was somewhat confusing before.
Fixes https://gitlab.com/kicad/code/kicad/issues/2205
* Push a function into CONDITIONAL_MENU that adds the item
* Modify the tooltip for close and exit items to have the
program name
Fixes: lp:1835454
* https://bugs.launchpad.net/kicad/+bug/1835454
In singletop mode, all frames show the "Quit" option in the file menu
and will quit on Ctrl-Q. When launched from the main KiCad interface,
sub-programs show the "Close" option instead and will close with Ctrl-W.
In this mode, Ctrl-Q will instruct the main program to exit.
Fixes: lp:1779938
* https://bugs.launchpad.net/kicad/+bug/1779938