gui: strip extra quote marks from string cells

format.go

@@ -14,9 +14,14 @@ func formatUtf8(in []byte) string {
 }
 
 func formatAny(in interface{}) string {
-	if _, ok := in.([]byte); ok {
+	switch in := in.(type) {
+	case []byte:
 		return "<<binary>>"
-	}
 
-	return fmt.Sprintf("%#v", in)
+	case string:
+		return in
+
+	default:
+		return fmt.Sprintf("%#v", in)
+	}
 }