i18n: tx canonical slug
i18n: tx canonical slug

Signed-off-by: Tibor Simko <c7116e45300b163846dc01f3ed02116e3f8ef7a5@cern.ch>

inveniosoftware/invenio-previewer,inveniosoftware/invenio-previewer,inveniosoftware/invenio-previewer,inveniosoftware/invenio-previewer