Misc v3 linear tasks (#767)

* v3_reroute 404 error

* hash change

* fixed issue with error conversion

* added new model confirmation tests
+ title name change

* renaming, fields

* owner; test changes

* clippy prepare

* fmt

* merge fixes

* clippy

* working merge

* revs

* merge fixes

tests/error.rs

@@ -0,0 +1,23 @@
+use actix_web::test;
+use bytes::Bytes;
+use common::api_common::ApiProject;
+
+use common::api_v3::ApiV3;
+use common::database::USER_USER_PAT;
+use common::environment::{with_test_environment, TestEnvironment};
+
+mod common;
+
+#[actix_rt::test]
+pub async fn error_404_body() {
+    with_test_environment(None, |test_env: TestEnvironment<ApiV3>| async move {
+        // 3 errors should have 404 as non-blank body, for missing resources
+        let api = &test_env.api;
+        let resp = api.get_project("does-not-exist", USER_USER_PAT).await;
+        assert_eq!(resp.status(), 404);
+        let body = test::read_body(resp).await;
+        let empty_bytes = Bytes::from_static(b"");
+        assert_ne!(body, empty_bytes);
+    })
+    .await;
+}