Merge PR #1110: expose selection settings

# Conflicts:
#	src/app/mod.rs
#	src/app/properties.rs
#	src/app/settings.rs
#	src/app/update/file.rs
#	src/app/view/modal.rs
#	src/ui/window/options.rs

src/app/view/modal.rs

@@ -186,7 +186,12 @@ impl OpenCADStudio {
                         self.language,
                         self.options_tab,
                         self.cursor_size,
-                        self.pick_box,
+                        crate::ui::window::options::SelectionPrefs {
+                            pick_box: self.pick_box,
+                            pick_add: self.pick_add,
+                            pick_drag_rect: self.pick_drag_rect,
+                            grip_object_limit: self.grip_object_limit,
+                        },
                         self.double_click_block_refedit,
                         self.double_click_block_attedit,
                         self.cursor_type,