Cleans up and removes TODOs, adds tests (#844)

* removes version ordering from v2; simplifies now-unecessary three-level faceting

* resolved some todos

* test for game version updating

* merge fixes; display_categories fix

src/routes/v2/versions.rs

@@ -215,7 +215,6 @@ pub struct EditVersion {
     pub downloads: Option<u32>,
     pub status: Option<VersionStatus>,
     pub file_types: Option<Vec<EditVersionFileType>>,
-    pub ordering: Option<Option<i32>>, //TODO: How do you actually pass this in json?
 }
 
 #[derive(Serialize, Deserialize)]
@@ -291,7 +290,7 @@ pub async fn version_edit(
                 })
                 .collect::<Vec<_>>()
         }),
-        ordering: new_version.ordering,
+        ordering: None,
         fields,
     };