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.
When looking at the list on a portrait mobile phone (400px), you'll see that it only fits 1 item per row. However, when an additional pixel of space is made somewhere, it fits 2 items, which looks a lot better