ClinvarParser refactorization and tests
Improved cosmic test to control some fields and check if input database version has change its fields
Added clinvar, cosmic and gwas parsers to command line; reformatted log messages; Deprecated mutation parser (use cosmic parser instead)
Merge branch 'consequence-type-gbpa' of gitlab.medicalgenomeproject.com:mgp/cellbase into consequence-type-gbpa
minor changes in cosmic parser test
Json serializer now can exclude empty fields