Fix bad connector - verify if both new and resolved issues are present before adding the connector.

What does this MR do?

Does a better verfication and concatenation of text showed in codeclimate and adds tests to cover all scenarios.

Does this MR meet the acceptance criteria?

• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #2676 (closed)