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Add help page, make eclipse runnable, make eclipse debuggable
merge with shuai
merge with rtong
update database
Merge branch 'master' into rtong

Conflicts:
	.gitignore
add part of student side
add student course page
delete unuseful file
construct the crosslist

construct the crosslist
Merge branch 'bowen' into rtong
delete wrong file
Merge branch 'bowen' into rtong
update stu_course
update stu_course
fix conflict
change sql password
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