Add devweb support for auto-reloading webapp.

db/util.go

@@ -223,3 +223,20 @@ VALUES
 	}
 	return nil
 }
+
+var MagicAllLabel = "[all]"
+
+type Paginator struct {
+	Label  string
+	Offset int
+	Count  int
+}
+
+// Index returns ranges of metadata for messages as defined by paginator.
+func (c *Conn) Index(p *Paginator) error {
+	if p.Label == MagicAllLabel {
+		// Paginate all messages.
+	}
+	// Else, filter by label.
+	return nil
+}