Add unit test for GermplasmListExporter class

BMS-73

Reviewer: Crisjaira Villarino
Migrate all "export to list" functionalities: Export List as Excel and Export List in Genotyping Order, in ExportService in IBPCommons

BMS-72

Reviewer: Daniel Jao
If the list is a new record to be saved, add checking if there is a list selected to be overwritten before displaying a confirmation dialog

GCP-10427

Reviewer: Cyrus Casada
Fix the file extension of exported files

BMS-72

Reviewer: Daniel Jao
Sync: Merge branch 'master' into 'BMS-33-authentication-authorisation'.