[feature/frontend] Hide "engagement" stats, edits, and other info under a little drop down to unclutter status info bar (#4021)

* dick about with stats a bit

* more dicking abuot

* lil tweaks

* more about-dicking

* weee

* comments

* fixie uppie

internal/api/model/status.go

@@ -166,6 +166,12 @@ type WebStatus struct {
 	// after the "main" thread, so it and everything
 	// below it can be considered "replies".
 	ThreadFirstReply bool
+
+	// Sorted slice of StatusEdit times for
+	// this status, from latest to oldest.
+	// Only set if status has been edited.
+	// Last entry is always creation time.
+	EditTimeline []string `json:"-"`
 }
 
 /*