Fix and enable gating on H703 - string localisation

Avoid using multi positional strings for localisation,
as those are hard to translate to various languages.
Also enable gating on H231 (which does not trigger).

Change-Id: Ie22cf781bcd5ce7562a5e61cf08fde816e7af86a
Merge "Fix and enable gating on H703 - string localisation"