Initialize List Details Fields at instantiation

GCP-9425

Reviewer: Daniel Jao
Create a separate method for the retrieval of ListOwner from setGermplasmListDetails

GCP-9425

Reviewer: Daniel Jao
Use StringBuilder for building the parseDate to return from getParsableDateString

GCP-9425

Reviewer: Daniel Jao
Code Clean: Add Curly braces, Logger and improve comments to make the code Sonar Compliant

GCP-9425

Reviewer: Daniel Jao
Created Unit Test for getParsedDate, getParsableDateString and getListOwnerValue

GCP-9425

Reviewer: Daniel Jao