Merge pull request #611 from sutra/develop

Implement BTCChina Trade API v2.0: stop order API methods for all markets.
create single ValueFactory object in BaseExchange implementation, propagate it to the services.
Added missing currency pairs
Merge pull request #614 from Achterhoeker/patch-7

Added missing currency pairs
Merge pull request #615 from rafalkrupinski/sync-nonce

create single ValueFactory object in BaseExchange implementation, propag...
Make id in open orders a long
Make id in cancel order a long
Make id in cancel order a long
Merge pull request #616 from Achterhoeker/patch-8

Make id in open orders a long
Add usd and drk to balance info
Add usd and drk to balance info
Upgrade to comply with changes in rescu: https://github.com/mmazi/rescu/issues/41
Merge pull request #617 from Achterhoeker/patch-9

CexIO: Added USD and DRK to balance info
update rescu version
Fix requestDepositAddress in BTCChinaAccountDemo, the currency should not be null.