Calgary Herald by Stephen Ewart.  When Alberta’s oil and gas regulator this week forecast oilsands production would double to 3.8 million barrels a day in less than 10 years, the rosy outlook ignored the potential for opponents to burst the province’s bubble.  With pipeline proposals from Keystone XL to Northern Gateway facing unprecedented hostility – even as North America’s vast pipeline network struggles to keep pace with fast-growing production – there’s greater risk the infrastructure will not be there to move Alberta’s oil to customers in a timely or efficient manner.