while the previous performance check was totally misguided -- if you dont want the block, don't enable it -- but there is no point in cutting performance if you can't access the block. also capture usernames.

naught101: use hook access to stop blocks displaying if user doesn't have relation creation permissions

This reverts commit ac853f1c.

This reverts commit ab7bbcc6.

Issue #1208436 by rump: Changed relation_type from autocomplete to selector in entity_collector block.

Issue #1165286 by naught101: Changed Label->Name everywhere, fixes machine_name. Also fix some coding inconsistencies.