Bug 15487: Fix encoding issue on localization

Bug 15487: Fix encoding issue on localization

It has been introduced
  commit ed0ff59152a41f6690b480d0b13b607250678418
    Bug 11559: Supporting changes for Rancor

Pushed at the same time as bug 14100.

Test plan:
Add/update translations for item types, confirm there is no encoding
issues.

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com
(cherry picked from commit 7fdb4d21d62674b29958022840aea2c2f82ef97c)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>