Added missing sessions controller
Added missing sessions controller

atomicjolt/OpenAssessments,lumenlearning/OpenAssessments,BYU-Open-Analytics/BYUOpenAssessments,lumenlearning/OpenAssessments,BYU-Open-Analytics/BYUOpenAssessments,atomicjolt/OpenAssessments,lumenlearning/OpenAssessments,lumenlearning/OpenAssessments,atomicjolt/starter_app,BYU-Open-Analytics/BYUOpenAssessments,atomicjolt/starter_app,atomicjolt/starter_app,atomicjolt/OpenAssessments,BYU-Open-Analytics/BYUOpenAssessments,atomicjolt/OpenAssessments