Revert "#1974 Removing lino.combobox.setValue method"
Revert "#1974 Removing lino.combobox.setValue method"

This reverts commit 9e119e0a44f07b257bd12ea40d80e4c0617cd06d.

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