Error handling fix layout
modified @lti_role_required to allow access by super admins, instructors, and teaching assistants
Moved the functionality to hide the error label inside the 'hide' custom event
wording change for page title -- now 'Manage Sections'
Merge pull request #35 from Harvard-University-iCommons/feature/Add_People_Tool

Feature/add people tool
Merge pull request #36 from Harvard-University-iCommons/develop

Merge from develop to master