Reject greater than and less than operators for id, parent and ancestor fields

Examples of rejected expressions: parent > 42, id <= 1337, ancestor => 64.

The way we convert CQL to solr, we can't support these operators for these fields. I don't think they make sense even in Confluence, you are probably not supposed to compare page ids which are database unique keys and which order don't have any particular meaning (you can't even rely on a page with a higher id being more recent for instance)