Update translation of service part.
Update translation of user part
Merge pull request #2 from resouer/zh-CN

Update translation of service part and user part.
Incorporated recommendations from @Kaixiang. Thanks @Kaixiang!
Incorporated recommendations from @hujie5592427. Thanks @hujie5592427!
Incorporated several recommendations. Thank you @shenyefeng,  @hujie5592427, @haojun, @wsxiaozhang you are all exceptional!
Incorporated more recommendations. Many thanks to @wsxiaozhang!
merge conflict