add marking for later reference

the content is tested in LogicTest; file name can be passed
rephrasing of comment

rephrasing of comment
Merge remote-tracking branch 'origin/master' into Issue1812
Merge remote-tracking branch 'origin/master' into Issue1812
test added for student list download action

dev not green: instructorCoursePageUiTest not passing--msg changed about
archived course
change to pass instructorHomePageUiTest

the msg to user is changed but the test is not changed
Merge remote-tracking branch 'origin/master' into Issue1812
Merge remote-tracking branch 'origin/master' into Issue1812
change back the adjustment

msg changed back
[1812] Clean up InstructorCourseStudentListDownloadAction

fixes #1812