Fixes incorrect loader fields (#849)

* loader_fields fix

* tested, fixed

* added direct file check for invalid file_parts

* search fixes

* removed printlns

* Adds check for loaders

* removes println

src/search/indexing/mod.rs

@@ -400,6 +400,7 @@ const DEFAULT_DISPLAYED_ATTRIBUTES: &[&str] = &[
     "links",
     "gallery_items",
     "loaders", // search uses loaders as categories- this is purely for the Project model.
+    "project_loader_fields",
 ];
 
 const DEFAULT_SEARCHABLE_ATTRIBUTES: &[&str] = &["name", "summary", "author", "slug"];