AJ-2429 Add student role constraint for individual and team views on leaderboard
AJ-2429 Add student role constraint for individual and team views on leaderboard

mkoon/gradecraft-development,zqian/gradecraft-development,zqian/gradecraft-development,peterkshultz/gradecraft-development,peterkshultz/gradecraft-development,peterkshultz/gradecraft-development,zqian/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development,mkoon/gradecraft-development,mkoon/gradecraft-development,UM-USElab/gradecraft-development