Update EncryptedStore.m

Fixed bug #89
Update EncryptedStore.m
Merge pull request #90 from jibeex/patch-1

Update EncryptedStore.m
implemented predicate  comparison to relation objects for many-to-many, fixes #88
Merge pull request #91 from project-imas/issue88

implemented predicate  comparison to relation objects for many-to-many, ...