fixed locale en_GB

...because there is no consistent translation.

Change-Id: I3f92c0636810d216884084e3de33e5894ae89be7
Reviewed-on: http://gerrit.esdi-community.eu/3170
Tested-by: Jenkins <sitemple@igd.fraunhofer.de>
Reviewed-by: Simon Templer <simon.templer@igd.fraunhofer.de>