make comment nullable
pair numbering starts 0
seeders implementation
add test data
fix
add database setup method
getGroups test
get groups response
remove ide-helpers
add ide-helpers
add environment check
basic getSchedule method implementation
fix typo & hide more fields
add basic test for APIController@getSchedule method
create example of APIController@getSchedule response
add exist check @getSchedule
Merge branch 'api-dev'