finish all contract interface

Helius

2020-06-05 9da52c963fcbee66a3b299bb687c1efbbafe93a7

 src/main/java/com/xcong/excoin/common/system/service/CommonService.java

@@ -8,4 +8,5 @@

    public boolean verifyCode(String account, String code);

    public String generateOrderNo(Long mid);
}