Translate editor display names in correct context.

These strings were internationalized long ago, but wrong context prevented
them from being actually tranlated in GUI.

This patch won't break anything - if these strings were not translated
for particular language, they stay untranslated, but if they were,
translations are used (e.g. for RU).

Change-Id: I175e29e8b0cee2bff9306623dad4a5956db69288
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>