Merge pull request #5 from cnnic/master

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Merge pull request #6 from cnnic/master

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Merge pull request #7 from cnnic/master

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oauth role add
consumer structure modify
delete synchronized keyword
database modify
Merge pull request #139 from larrychen8276/master

oauth role add
Merge pull request #14 from cnnic/master

merge from cnnic
fix bug ns query
Merge pull request #140 from forumbyr/master

fix bug ns query
Merge pull request #16 from cnnic/master

fetch from cnnic