access resource library and cms login info
modify form www0
modify: access resource library
merge from www0
Merge branch 'star' into www0
Merge branch 'www0' into wangxin
ruby-version
Merge branch 'wangxin' into www0
Merge branch 'star' into www0
Modify: course unit next arrow can go to next section
Merge branch 'star' into www0
increases delete disscussion comment