Use ListDecorators when retrieving a table's custom results

[rydnr]

Information

As was done for table's attributes, the information about custom results should be provided using ListDecorators. That would allow filtering in the templates themselves, as needed.

Actions required

• Extend ListDecorator interface to add "getDifferent()" method.
• Make AbstractTableDecorator return a ListDecorator in "getDifferentCustomResults()".
• Rename "getDifferentCustomResults()" to "getCustomResults()".
• Refactor "TableAttributesPartialListDecorator" to extract a parent "AbstractPartialListDecorator".
• Add Operation.DIFFERENT to AbstractPartialListDecorator.
• Implement a TableCustomResultsPartialListDecorator, supporting "getMultiple()" and "getSingle()" filters.

Steps to reproduce

• Use <table.customResults.different.only.single> template.
• Check the affected custom results are not provided.

Acceptance criteria

• Use <table.customResults.different.only.single> template.
• Check the affected custom results are provided.