* Fix and add menu accelerators: menus common to all workbenches
I use menu accelerators fairly often, so I find it very frustrating when
they are missing, or worse, they don't work due to the same letter being
assigned to several commands.
This patch adds accelerators to lots of menu entries missing them and
fixes broken accelerators.
Wherever possible, standard accelerator keys are used:
https://doc.qt.io/qt-5/accelerators.html
This commit covers accelerator fixes that are common to all workbenches.
Accelerator fixes for specific workbenches will be done in separate
commits.
* Add missing accelerators: Spreadsheet workbench
Every time the InvoluteGearFeature python module was imported, and we're
in GUI context, the command "PartDesign_InvoluteGear" was registered. On
the 2nd (3rd, ...) time, this was reported as an error in the console,
like "error: Command.cpp(1841): duplicate command PartDesign_InvoluteGear"
The first import happens when the PartDesign FreeCAD Module is loaded,
via `InitGui.py`. Subsequent imports may happen when e.g. executing the
involute gear command or when running it's tests via FC's Test WB.
This change now registers the command only then the PartDesign WB is set
up in InitGui, not when importing the python module. The same fix is
applied for sprocket, where the same pattern for command registration
was used.
In addition, the import error catch was removed, which seems to be a copy
paste left-over from the ShaftWizard. In contrast to ShaftWizard,
involute gear and sprocket only use modules from the Python standard lib,
so I think this precaution is not worth the additional complexity, just
for hiding actual errors.
This commit is generated using regex based find and replace:
```
s/[\w:]+_cast\s*<([^>]+)\*>\s*\(\s*getObject\(\s*\)\)/getObject<$1>/
s/[\w:]+_cast\s*<([^>]+)\*>\s*\(\s*([^)]*)\s*->\s*getObject\(\s*\)\)/$2->getObject<$1>()/
```
To regenerate if needed.
Most of App::Origin is moved into this sub class of App::Origin.
Add App::Point. Change graphics of the planes/axis.
Remove scale-by-content behavior and make it fixed size on screen.
When creating a sketch in PartDesign a dialog is opened that gives the user the possibility to perform another action that may close the
active transaction. To make sure the creation of the sketch can be undone a new transaction must be opened.
