Publishing Course with unsaved members is no longer possible
Fixed scope problems
changed save-message in treeview; fixed saving quiz; added version; refactores 'lessons' name
Merge pull request #5 from pmuchowski/phase2

remove Scroll on Chrome browser
Node children are now populated on addition
Added null checking to switchUnitState
Changed isChildren to check node id instead of its name
Changed lessons property to message in TreeView
Limited number of questions field in quizzes
Fixed number of questions field in quizzes
Merge pull request #7 from felipeq/quizzes

Fixed number of questions field in quizzes
create relations during importing Course csv
added ability to import multiple courses via CSV; fixed tests
Added course units versioning upon publication
added location setting for course
Merge branch 'felipeq-phase2' into phase2
fixed setting the value for version
Fixed message formatting in the error dialog
change errors labels and error level
fixed getting locations for providers