devices are gotten using PEP and +notify, and bundles are then retrieved, and kept in cache.
This allow to remove the test code which was always requesting devices and bundles before
sending a message. For now OMEMO plugin will only work with people in roster, this will be
fixed in the future.
- omemo module logs are now integrated in SàT
- OmemoStorage adapated to changes
- now really delete OTPK each time, behaviour may be modified in future
- fixed bad arguments used during decryption
- adapted to other changes
OMEMO is now working \o/
It still needs some adjustements though: bundles/devices are for the moment requested on each message encryption, and fingerprints management is not implemented yet.
