remove spec helper for active record resources
added courses management
Revert "remove spec helper for active record resources"

This reverts commit 0dfe4b8e4162b47a292fa4721a1ceef19e7f7499.
Revert "added spec helper file for active record resources"

This reverts commit 88a9a9693578c672bbd2af9136eed3fa9f6877a5.