#11: added location logic
#11: fixed Location related tests
#11: removed Schedule concept
#12: added Location services to blueprint
#10: Added constraint on removing quiz related to chapter
#13: Added logic and UI for Providers
#13 Added validation to Provider UI
#7 Fixed validation in Quiz UI
#7: Added LocationService to IT app context
#12: Added contentId to every mTraining level and fixed import quiz and question from CSV
#7 - UI for defining the course - Initial TreeView

Conflicts: mtraining/src/main/java/org/motechproject/whp/mtraining/service/impl/DtoFactoryServiceImpl.java
#7: Added treeView functionality, updated relation service, created IT for the controller
#7: Modified treeView UI
Revert "#11: fixed Location related tests"

This reverts commit eb8b32544e697b0bb239b7f1fcc2f3f591612c77.
#12: added level property for location, fixed adding locations via import provider
#12 Fixed import 'valid selection options' in questions
#12: added fetching locations by level
#13 Fixed display locations in Provider UI
#12: refactored filename->externalId
#7: Added possibility to publish the course from treeView UI