add course_ware update title desc
minor bug fixes
preview page
增加课件的js
调整js
修改课件标题
Merge branch '1.1' of github.com:mindpin-shcmusic/pin-2012-edu into 1.1
added js to teaching plan preview page
Merge branch '1.1' of git://github.com/arlyxiao/pin-2012-edu into 1.1

Conflicts:
	pin-edu-sns/app/assets/javascripts/app_js/by_menxu/teacher_plans.js.coffee
Merge branch '1.1' of github.com:mindpin-shcmusic/pin-2012-edu into 1.1
merge
Merge branch '1.1' of github.com:mindpin-shcmusic/pin-2012-edu into 1.1
增加 预览 链接
Merge branch '1.1' of github.com:mindpin-shcmusic/pin-2012-edu into 1.1
Add validation before remove teaching plan