Merge pull request #12 from hutuxiansheng/master

fix notice view zn-CN
add views for examination and questions.
Fix issue for user course and course library.
Display course students which has position related competency.
fix debug typo.
Do not list admin as students.
Do not count teacher as the students.
Fix issue for menu not corrent for data mining page.
fix user dashboard competency name error.
Translate paginate. Add edit button in course management.
Add send message button in user profile page. Add discussion text input to create new discuss.
Add knowledge page.
Add detsils page for demo.
Finish quetsion details page.
add User level display.
Admin no need to input text for quetsions.
fix typo.
Display some notice for disabled feature for user test.
fix a style issue for assessment management.
Notice missed in examination page.