grouping validators
add put buy test
add timepad_data_helper restore_data_from_csv_test
add tests for timepad_test_data_helper
add tests for timepad_test_data_helper
Merge branch 'feature/refactoring' of github.com:ulmic/nastachku into feature/refactoring

* 'feature/refactoring' of github.com:ulmic/nastachku:
  add tests for timepad_test_data_helper
Merge branch 'feature/refactoring' of github.com:ulmic/nastachku into feature/refactoring

* 'feature/refactoring' of github.com:ulmic/nastachku:
  add tests for timepad_test_data_helper
Merge branch 'feature/refactoring' of github.com:ulmic/nastachku into feature/refactoring

* 'feature/refactoring' of github.com:ulmic/nastachku:
add .tconsole to detect decorators test
add lectures sorted by time test
add tests for at_this_time
add test for slot at the time
add test for hall decorator
fix test
fix test
fix test
add test to custom url helper and fix timepad data helper
add order helper pay ticket test
add tests for order helper
remove unusing helper_method