Create the 'About content' widget

There should be an aboutcontent widget that has 2 different tabs. The first tab is the Details tab and shows the metadata of the content (title, description, url, created by). When a description is not available, it should not be shown. The second tab is the Shared with tab and shows the list of members of the content.
In this case, my preference would be to extend the list item template with an additional parameters that allows us to specify the target of the link. For example, we can see that this is already missing the conditional for when a user is private, and extending the template is going to avoid bugs like that.

I do think we've reached a point where we probably want to pass in an object into the macro with all of the optional parameters to avoid that the method signature becomes too long.