Add more information about the failing entity cache tags

[e0ipso]

Entity cache tags give you the entity type ID, and the entity ID. This is sufficient to identify the entity in question.

However, it would be useful to have additional information about the entity behind the reported missing tag.

I turning the <ul> into a table so we can see:

• Missing cache tag.
• Entity bundle.
• Entity label.
• Operations button to View/Edit.
• (other?)