[Messenger] Open article links in the widget instead of a new tab + bug

Open article links in the widget instead of a new tab

Add an option to open articles & changelogs in a new window from Messenger [https://feedback.featurebase.app/p/option-to-open-articles-and-changelogs-in-a-new-window]

Also, if you there are links that open in a new tab, make sure the link has the JWT token as otherwise it won’t work