Rename params to parameters for UI
Rename curves to graphs for UI
Rename children to library for UI
Rename groups to sets for UI
Rename group to set for popup menu: action add/remove to/from set
Fix Set sub-menu of canvas window menu
Rename encapsulate to group for UI
Rename ducks to control points for UI
Rename inline/pasted canvas to group for UI:
rename inline canvas layer to group layer,
rename pasted canvas layer to group layer,
rename canvas parameter value from pasted canvas to group.
Rename bline to spline for UI
Rename parameter value BLine Point to Spline Point for UI
Make type_local_name translatable and type_name untranslatable
Rename type local name: bline_point to spline_point for UI
Fix Group Layer button on layer dock toolbar.
Update action_add_to_set icon
Update action_remove_from_set icon.
Update library icon.
Update select_all_child_layers icon.
Update set icon.
Update type_canvas icon.