Shows path to database (click to copy), database size, database log
size, message count.
Also adds a Ctrl+Shift button to wipe the database permanently. This is
performed by clearing the Messages collection and then rebuilding the
database, which brings it down to around 48KB on my machine (even with
many messages).
Adds a parsing step when constructing `Message` objects that scans the
message content for anything that looks URL-like, and inserts new
`TextChunk`s into the message content with a URIPayload set.
Hovering over a URL shows an on-hover effect. Clicking a URL opens it in
the default browser. Right clicking shows the hostname, with an option
to open and an option to copy the URL to the clipboard.