Hamer's reputation algorithm and tests
Make it easier to add more reviewers by rolling up reviewer creation into a loop
Remove unused Assignment#compute_scores method

Add a refactoring todo comment
Refactor Response#get_total_score
Commit after fixing errors on local machine
Commit after fixing errors on local machine
Final changes to collusion detection
Final changes to collusion detection
Some refactoring
meng
rename create_node() to create_course_node() in course.rb
add several course unit tests
course unit tests done
course_node changes
add course_node_test.rb
fix an error
fixture added in user_test.rb
add course_node_test.rb and course_node.rb
course_team chaged refactored import
Merge branch 'hao' of https://github.com/mengcao/E608