Modify LabelFor extension method
Add Roles modules
Merge pull request #17 from zhangjn/master

Modify LabelFor extension method
Fix the error that can't query with reserved keywords.
Merge pull request #18 from icese7en/master

Fix the error that can't query with reserved keywords.
add role
Merge branch 'master' of https://github.com/Coevery/Coevery-Framework