Add open/copy target in object browser widget.

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[ichim-david]

Looking at this screenshot that I took of the feature, @robgietema I suggest the following:

• [ ] remove the title before the link, it's duplicated and doesn't serve a better purpose than the linked text that follows it especially when you have an external link where you get the svg with the external icon.
• [ ] I think a button would be better for the copy link action, right now I feel it needs at a minimum the css pointer cursor added
• [ ] You don't really have any indicator of popup functionality and it's not keyboard accessible but maybe you envision this only as a helper for editors who know that they need this

EDIT: This is an opinion of mine and not a review, feel free todo what you want with it :).