[cache] fix a cache issue with an entity created without relation cache prefill
Prefilling the relation cache has its benefits sometimes, but for
massive imports it may be a memory hog.
The caches should be kept coherent even if there was no prefill.
Closes #3828155.
David Douard <david.douard@logilab.fr> [Tue, 06 May 2014 14:11:17 +0200] rev 9729
[views] remove reference to the MAPPING_CHECKERS dict (closes #3810219)
Was removed by by the changeset 65d93a4fd11c
([multi-sources-removal] Drop pyrorql and zmqrql sources)