Added lesson and course entities
Specs added
Added specs to test model properies existed
Added course / lessons rspece
Added course lessons entities
Rights changed
merge conflict fixed
Added scope to order lessons
Added specs to test course buttons and lessons pagination
Added course buttons to the index page
Merge branch 'feature/add-course-buttons-to-the-index-page' into develop
Merge branch 'release/move-course-lessons-to-production'
Merge branch 'master' of https://github.com/groomycian/nouscourse
fix-faker-env
Merge branch 'hotfix/fix-faker-env'