fix(track): the cab keeps the shake a track doesn't replace, and the editor redraws all that an edit changes

The side sway from the lateral acceleration now goes off only on a track with a sideways value, and the random jolts on one with a vertical or a sideways value. Dips at the rail joints and cross level alone replace neither. On a switch it goes by the path set and what its joined tracks allow.

An edit in the editor also rebuilds the other switches of a joined group with the tracks they meet, and the tracks of a rail run whose joints moved. Removing a track does the same. While dragging, the tracks further off wait until the drag ends.

The clatter of a bogie's axles was right: the followers stand at the pivots and the offsets are the places of the wheel sets. The misleading name goes.

Also what Sonar had left: a parameter as a span, a const method, a struct and its member apart, commented out code, and a function of the grading tool split, with the same output.

application/editormode.h

@@ -639,6 +639,7 @@ class editor_mode : public application_mode, private editor_track::observer
 	glm::mat4 m_track_gizmo{1.0f};
 	bool m_track_gizmo_using{false};
 	bool m_track_dirty{false};
+	bool m_track_drag_on_the_way{false}; // committed, but not as the end of the drag
 	std::chrono::steady_clock::time_point m_track_last_commit;
 	editor_track::state m_track_field_before;
 	std::array<std::array<char, 256>, 3> m_track_materials{};