DCS(DiceShares renamed from JDS) testnet#2

[Musewhale]

do it 

[zhangweis]

Original test post: https://bitsharestalk.org/index.php/topic,22454.0.html
White Paper:
https://docs.google.com/document/d/1r5SQcRGrmTRrNesETarMrkAZ-1gvJVbjL7sHStsTpHw/edit?usp=sharing

To join the testnet, you can:
- Directly open http://120.27.4.72:7000/ on browser with secret "record truth cost animal congress harsh obtain surround puppy rain town exit". Click dices menu item to play dices.
- Setup a node by cloning https://github.com/zhangweis/dcs.git and follow the instructions.

New features:
- RNG based on DPOS.
- Shuffle on every block so that delegate can only know its position 1 block ahead.
- UI optimization.