Now the ref-qualifier (& or &&) of the function declaration
is propagated to GUI. For example, 'Refactor' -> 'Add Definition'
preserves the ref-qualifier.
Change-Id: I8ac4e1cad4e44985e94230aabbd9858a7e929fee
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>