By Stephanie Kelly and Shadia Nasralla LONDON (Reuters) -BP said on Thursday it expects global oil demand to grow until 2030, five years later than its forecast a year ago, pointing to slowed efforts to increase energy efficiency and reduce global carbon emissions. The oil major's latest Energy Outlook, an annual study of energy trends through 2050, models two scenarios. The "Current Trajectory" scenario is based on existing policies and pledges. Its "Below 2-Degrees" scenario, a reference to the aim of ...