added POD for Test::Chado::Cvterm API
Added count_alt_id_ok,count_subject_ok,count_object_ok and has_synoynym
testing APIs.
Added rest of the api method.
Updated documentation and parameters for each api.
added tests for cvterm api
Fix the issue about the content of config file not getting into
compressed output
fixed bunch of errors in the Cvterm API
Added script to populate fixture
added new preset containing evidence code ontology
Removed BCS resultsource as it duplicates loading of cvtermsynonym
a preset containing cvtermsynonym
Added count_comment_ok api
Added tests for two more apis
Removed the duplicated ResultSource
Added three groups for export
Added api for testing xrefs
Fixed bunch of query issues
Added custom relationships name to match with BCS
Added tests for all api
cvterm api tests for pg backend
added _build folder to skip
Merge branch 'feature/test-cvterm-api' into develop