core (memory/encryption), plugin OTR: finished OTR integration in encryption: - messageEncryptionStart and messageEncryptionStop are now async - an encryption plugin can now have a startEncryption and endEncryption method, which are called automatically when suitable - trust is now put in "trusted" key of message_data, and markAsTrusted has been added, it is used in OTR - getTrustUI implemented for OTR, using legacy authenticate code - catch potr.crypt.InvalidParameterError on decryption - fixed some service OTR messages which were not correctly marked as not for storing, and thus were added to MAM archive/carbon copied - other bug fixes