Prop 2: Activate Trading Rewards and the 6-Month Launch Incentive Program

We are proposing to end the Beta Stage. Details Forum: https://dydx.forum/t/drc-activate-trading-rewards-and-the-6-month-launch-incentive-program/1619 DIP 2: https://docs.google.com/document/d/1IwnZZipDUOJpI_S-uV5Epoq_rPujSPxas9wSG_ec-Ls