Merge pull request #8 from ebf/xiaodong

Xiaodong
Merge pull request #9 from ebf/xiaodong

sort customer and product list. update version to 0.1.8
Merge pull request #10 from ebf/xiaodong

Xiaodong
Merge pull request #11 from ebf/xiaodong

add allowProductActivation field. update version
Merge pull request #12 from ebf/xiaodong

improve the logic for billing job. update the version.
solved issues from Petra