#2195 Field.rel renamed to Field.remote_field
#2195 Field.rel renamed to Field.remote_field

lino-framework/extjs6,lsaffre/lino_extjs6,lino-framework/extjs6,lsaffre/lino_extjs6,lino-framework/extjs6,lsaffre/lino_extjs6,lsaffre/lino_extjs6,lsaffre/lino_extjs6