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.
I've written the tests and added the parameters. I haven't yet consolidated the parameters into objects as I'd like to talk about the specifics first before I touch all areas that call these macros.
Would you prefer passing in 1 object to the macros or split it up into multiple ones? If I remember correctly trimpath doesn't deal with this very well so we'll probably be adding quite a few lines constructing the objects.