Add additional fields to grade book.
Add additional fields to grade book.

Split first and last name. Add user name, score and, badges count.

Closes #686.

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