[#Refactoring] Faris: Merged api_retrieve_child_record and api_retrieve_child_record_ids into one file api_retrieve_child_records.
[#Refactoring] Faris : Moved API tests into a separate folder.
[#Fixing Tests] Faris: Fixed translation test.
[#Fixing Tests] Faris : Fixed failing tests in add_custom_field_to_form_section. Removed all sleeping time in tests.