fix reload issue in ObjectFieldTemplate cards or rethink the implementation

[miguelgrc]

Adding a condition in ObjectFieldTemplate in #87 (comment) causes refresh issues in the cards: they don't immediately refresh when e.g. the title is changed or an item is added inside of a collection, only after performing a subsequent action (i.e. the update is delayed). This also causes some tests to fail.

For now we have left that line unchanged to avoid these issues. We need to investigate how to fix this and make the loading also work. Perhaps the entire logic should be rethought from scratch.