[ADD] ir_translation: allow extra translations in folder i18n_extra
[ADD] ir_translation: allow extra translations in folder i18n_extra
MarkusTeufelberger/openobject-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,splbio/openobject-server