EHN: special handling of html files in shared resource.

The shared resource returns files of all media types as download
attachments except for HTML files, which should be opened by the browser
directly.

src/main/java/caosdb/server/resource/SharedFileResource.java

@@ -71,7 +71,12 @@ public class SharedFileResource extends AbstractCaosDBServerResource {
 
     final MediaType mt = MediaType.valueOf(FileUtils.getMimeType(file));
     final FileRepresentation ret = new FileRepresentation(file, mt);
-    ret.setDisposition(new Disposition(Disposition.TYPE_ATTACHMENT));
+
+    // HTML files should be opened in the browser.
+    // Any other media type than HTML is attached for download.
+    if (!MediaType.TEXT_HTML.includes(mt)) {
+      ret.setDisposition(new Disposition(Disposition.TYPE_ATTACHMENT));
+    }
 
     return ret;
   }