Merge commit 'f75071c7c70a2cb582b73a751b0105247f06c737' into stage 

When performing is-member-of queries, limit to request->limit 

Merge branch 'stage' into live Conflicts: twine/rulebase.ttl

Merge branch 'develop' into stage Conflicts: quilt/db.c twine/rulebase.ttl

Rulebase clean-up, with focus on creative works and digital assets (see https://github.com/bbcarchdev/inside-acropolis/wiki/Creative-Works-and-Digital-Assets)

Merge branch 'live' into stage 

rulebase: Preserve skos:exactMatch triples skos:exactMatch triples aren't being used to correlate resources as they are being stripped from resources before the correlate step. Rather than stripping skos:exactMatch triples, add a Spindle property to the rulebase that enables them to be retained for correlation. This indirectly fixes#101 as the triples required to correlate using skos:exactMatch are no longer being removed.

RESDATA-970 Implement multi value for= parameters 

Don't ever apply a trigger to the entity that's triggering the update (……#94)

Workaround to prevent from creating loops