Make it easier to observe usernames on Page history

Problem Definition

With the introduction of collaborative editing, multiple editors are now attributed to a page. When browsing into any page's page history, the UI shows only avatars in the "changed by" column.

1. This can make it difficult to determine the names of who made contributions to each version of the page.
2. If there are a large number of edits on the page, you cannot use the browser search to find a specific user now that there are not text usernames to search for

Suggested Solutions

• Add usernames besides the avatar.
• Make tooltips appear quickly in order to see who made what changes.