Move the ranking of resources to a separate module
Merge branch 'create_module_for_recommendation' into development
Fix bug of returning the wrong values
Fix bug: returning sorted_nodes(nil) when there is no user param
Merge branch 'fix_resource_recommendation_bug' into recommend_lesson_plan_for_concept
Refactor factory for #training_resources
Create factory for user with learner_profile
Refactor concept spec with new user factory
Refactor more of concept spec with new concept factory
Convert all let! into let
Add new concept factory for testing #lesson_plans
Use complex_leson_plan factory to test recommendation module
Merge branch 'refactor_test' into recommend_lesson_plan_for_concept
Change the 2nd lesson_planin the factory for recommendation
Add spec for lesson plan recommendation
Implement #lesson_plan
Merge branch 'recommend_lesson_plan_for_concept' into development