deleted people
Merge branch 'www0' of https://github.com/EduPepperPDTesting/pepper2013-testing into lvzh
modify:people sort|people dashbord
Merge branch 'victor' into www0
modify:complete course

modify complete course prompts
Merge branch 'www0' of https://github.com/EduPepperPDTesting/pepper2013-testing into lvzh
add page course_credits