fix cut, copy & paste action from toolbar
fix cut, copy & paste action from toolbar

tobiasdiez/jabref,JabRef/jabref,sauliusg/jabref,sauliusg/jabref,Siedlerchr/jabref,JabRef/jabref,zellerdev/jabref,zellerdev/jabref,tobiasdiez/jabref,Siedlerchr/jabref,zellerdev/jabref,zellerdev/jabref,JabRef/jabref,tobiasdiez/jabref,tobiasdiez/jabref,Siedlerchr/jabref,Siedlerchr/jabref,sauliusg/jabref,sauliusg/jabref,JabRef/jabref,zellerdev/jabref