Also remove grouped properties if the last member is removed via removeObjectMember
(removeBindingByName already takes care of this).

changeProperty->changeBinding
removeProperty->removeBindingByName

This way one can reindent afterwards.

Reviewed-by: Erik Verbruggen

With 700975ad one could specify that a UiObjectMember should be inserted
after another one. But 0 'the default parameter' was ambiguous in that
either you want to have it inserted at the beginning of the member list,
or the heuristics should be applied.

Make this explicit by providing two methods.

Done by erikv

Done by erikv

We have to keep the line ending in case the removed
property is not the only thning in that line