Refactor data source configuration

This MR provides:

• Backend: list of data sources into the spring application.yml properties rather than having them listed in a resource file of the application.
• Frontend: card-generic-document component uniformizing the display of data sources and PUI on every card.
• Frontend: automatically updating of data sources in the nav bar

Fix GNP-5567 Fix #12 (closed)

• Move data sources to spring config
• Refactor frontend display of data sources (add them on germplasm card)
• Dynamically load sources in navbar (keep order, bonus: show only partners with data)
• Rebase on master (After !18 (merged) is merged!)