Add sidebar.
Merge remote-tracking branch 'origin/LF' into LF

Conflicts:
	ScoreByStudent_Management.html
	css/ScoreByStudent_Management/ScoreByStudent_Management.css
	js/ScoreByStudent_Management/InitCourseList.js
	js/ScoreByStudent_Management/ScoreByStudent_Management.js
	json/1152112.json
	json/1152124.json
	json/classes_all.json
Add sidebar.
修改了部分页面的css
Merge remote-tracking branch 'origin/LF' into LF

Conflicts:
	ScoreByStudent_Management.html
	js/ScoreByStudent_Management/ScoreByStudent_Management.js
Merge branch 'LF' into WLB

Conflicts:
	ScoreByStudent_Management.html
Merge branch 'master' into WLB
1、增加选择课程时的课程搜索
2、增加去除最高分和最低分的功能