#20: Fixed NPEs after importing data from CSV, duration for newly created courses
#24: Simplified updateCourseDto method
#29: Added API for updating the Providers by Remedi ID
#22: Location should be state-only level
Merge pull request #12 from tstalka/mtraining-#22

#22: Location should be state-only level
Merge pull request #13 from tstalka/mtraining-#29

#29: Added API for updating the Providers by Remedi ID
#27: Treeview: Indicate that a Course is published to IVR