Unifies the different sections of hotkeys so that we are not storing two
[eeschema] or [pcbnew] sections in two different files.
Previous hotkey definitions are loaded at start if they exist but are
overwritten by the new format, if it exists. Changes to hotkeys save
only in the combined format.
Hotkey editor for each application only shows the hotkeys relevant to
that application.
Fixes: lp:1741757
* https://bugs.launchpad.net/kicad/+bug/1741757
Fixes: lp:1668799
* https://bugs.launchpad.net/kicad/+bug/1668799
* Refresh the view only when changes are made in the caller frame.
* Allows recreate a new instances when try to open the 3D view from a frame taht is not the initial caller
* Remove duplicate code in kicad frames.
While we already cache the loaded footprint files, parsing said files
into the list is also time-intensive. Since the FOOTPRINT_LIST is
already hash-stamped against the current timestamps of the files that
make up the list, sharing a single copy of the list is quite
straight-forward.
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
Jeff Young
Seth Hillbrand
jean-pierre charras
Maciej Suminski
Michael