CLC-4577 Restore Find a Person to Add tool
CLC-4577 - Restored original E-Grades link logic. window.ENV.COURSE_ROOT_URL does not exist in Gradebook context
CLC-4568 - Added 'Download E-Grades (.csv)' header to grading scheme dialogue view. Applied Foundation styling to container
Merge pull request #3181 from raydavis/qawip

QA CLC-4568, CLC-4577 Add E-Grades header, fix Find a Person to Add