SortedMessages: sort by receiveDate, not sendDate, fixes erratic behavior with GG chats
message: add RawMessage class

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>
encryption_ng: #2751 fixed: compatibility between 0.12 and 1.0

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>