use to_string() instead of dump_code for snapshots

- `dump_code()` does not provide a stable order for facts, so facts can jump around when typing a query or extra authorizer code
- `to_string()` provides the origin of facts as comments, instead of obscuring it

src/parse_snapshot.rs

@@ -38,7 +38,7 @@ pub fn inspect_snapshot(query: &JsValue) -> JsValue {
 
 fn inspect_snapshot_inner(query: InspectSnapshotQuery) -> Result<ParseResult, error::Token> {
     let mut authorizer = Authorizer::from_base64_snapshot(&query.data)?;
-    let code = authorizer.dump_code();
+    let code = authorizer.to_string();
     let iterations = authorizer.iterations();
     let elapsed_micros = authorizer.execution_time().as_micros();