Backport of syncLang to python2 (#3420)
Backport of syncLang to python2 (#3420)


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