Fix opening a request in a new tab

What does this mr do?

Closes #709 (closed). To verify, open the lab view or click the Requests in the header and Ctrl+Click a request, it should open in a new tab.

Actions taken to fix bug

Added to the check for what key is used to open the request in a new tab to also verify whether it's a meta-key (Mac's command key). On Mac this solved it, remains to check whether it work on other OSs?

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide.