When updating toolbars make sure the events are coming from the
toolbar in question (and not the menus which share the same ID).
Fixes: lp:1763563
* https://bugs.launchpad.net/kicad/+bug/1763563
This is due to the fact the same ID was used for menuitems in menubar,
and tools in toobars.
Especially, some items were not compatible due to different attributes.
Windows does not accept the same ID for 2 items inside the same frame.
It creates issues (items not shown, Asserts, ...)
Fixes a bunch of errors:
- libedit and libbrowser would zoom to bounding box but centre on canvas
- libedit, libbrowser and gerbview didn’t take the scroll bars into account
- pcbnew didn’t take scroll bars into account or apply the 10% margin
- appending a board file would re-centre, but not re-zoom
Fixes: lp:1504302
* https://bugs.launchpad.net/kicad/+bug/1504302