en to en_GB translation catalogue (2 entries)

[ctx: KAuth::ExecuteJob]
en: The backend does not specify how to authorize
en_GB: The backend does not specify how to authorise

[ctx: KAuth::ExecuteJob]
en: The current backend only allows helper authorization, but this action does not have a helper.
en_GB: The current backend only allows helper authorisation, but this action does not have a helper.
