format jsp
do refeactor.
allowed tiles in courese maintenance
small change in stepall .
fix some bug in course creation.
Merge branch 'master' of https://github.com/zhangBenson/zy into nnmaster
add class info
add class info
add display feature.
Merge remote-tracking branch 'origin/master' into nnmaster

Conflicts:
	WebRoot.war/jsp/gogowise/course/courseMaintenance.jsp