Separate the SPARQL deletes so if one doesn't match the others still work. Fixes #564
ActiveTriples properties should know that they are multiple. Fixes #547
Merge pull request #565 from projecthydra/separate_deletes

Separate the SPARQL deletes so if one doesn't match the others still work
Merge pull request #566 from projecthydra/properties_are_multiple

ActiveTriples properties should know that they are multiple. Fixes #547
Refactors ActiveFedora::File#size to use two new methods, ActiveFedora::File#persisted_size and ActiveFedora::File#dirty_size.
This fixes #560 where has_content? was returning false when there was unpersisted content, b/c it was only checking the size of persisted content.