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.
A frozen object prevents the document to be saved
The frozen status propagates into object inheritance
A frozen sketch is no more editable
Transform and Placement can't be changed for a frozen object
The freeze icon is reduced
The order of sketches in sketch attaching tool is now determined
by the order in which they were added to document.
Sorting them alphabetically makes IMHO much easier to find a sketch
by user, compared to current state, especially in large and complex
projects with lot of sketches. Of cuser thix expects the user
use sensible names for the sketches.
TNP fix algorithm doesn't seem to like when edge with geoId 0 is deleted/made
construction after new geometry is added. Instead, we just ensure that one of
the newly added geometries becomes geoId 0 instead.
Making a `generateId(const Part::Geometry*)` was part of earlier attempts, but
still appears to remain relevant. This part can be reverted if necessary.
DO NOT MERGE because not complete: not all constraints are not transferred.
Includes:
* Adjust `deriveConstraintsForPieces` for trim
* Make sure new points are constrained on the cutting edges
* Add constraints at trim end(s) dependent on pre-exisiting ones with cutting curve(s). Also change tests to reflect that auto-coincidence can now be applied to non-periodic curves as well.
Known issue(s):
* Some redundant constraints may be added under certain circumstances (e.g. in
presence of perpendicular-via-point)
Convenience helpers function Tools::toStdString and Tools::fromStdString
were implemented for Qt4 or older to perform utf8 aware conversion as
QString::toStdString/QString::fromStdString were using toAscii/fromAscii
internally (see https://dreamswork.github.io/qt4/classQString.html).
Since Qt5 QString uses toUtf8/fromUTf8, which makes the helper functions
obsolete (see https://doc.qt.io/qt-5/qstring.html#fromStdString).
* Core: Add possibility for task dialogs to associate a view and be able to close when associated view is closed.
* TaskImage: Use task dialog view association.
* Sketcher: Use task dialog view association. Preventing crash (https://github.com/FreeCAD/FreeCAD/issues/16702)
* EditableDatumLabel: Use QPointer to prevent crash
