Spending Quotient calculator and displayed formula are no longer correct

The old Spending Quotient formula was built for pre-LotV numbers.

For the LotV era, the formula should be updated to have a 1.4 in it, the pages that mention the formula should be changed, and the calculator page should be changed too:

http://ggtracker.com/spending_skill_stats#?race=protoss&gateway=am
