Bugfix/test-2N-3M

[NabinKawan]

List of changes

• Add "add link" button click event on the test 3M (Validation of edit DRep form)
• Update the DRep information navigation flow on test 2N (Should show DRep information on details page)

Checklist

• related issue
• My changes generate no new warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the changelog
• I have added tests that prove my fix is effective or that my feature works