Fixed GraphiQL UI Issue

There was a UI issue for GraphiQL in version 5.0.0 for browser Edge. This was fixed by adding a patched resource, that loads GraphiQL in version 5.0.6.

(CMS-28994)

Changed CaasConfig#remoteLinkDataLoader

The bean creation of CaasConfig#remoteLinkDataLoader has been changed to comply with the API of DataLoader, this includes a change of the return type from DataLoader<String, Try<String>> to DataLoader<String, String>.

(CMS-28787)