Remove msig folder.
Merge pull request #1012 from yagoulas/drop_msig

Remove msig folder.
Unit test proof-of-burn address generation.
Refactor trust.py.

* Groom imports.
* Refine logging output.
* Use Static Single Assignment in burnaddr_from_guid.
Merge pull request #1013 from Renelvon/test_trust

Initial tests and refactor of trust.py
Update donation address.
Merge pull request #1014 from Renelvon/new_donation_address

Update donation address.
Use self.transport in dht instead of passing it as parameter
Merge pull request #1015 from yagoulas/dht_light_cleanup

Use self.transport in dht instead of passing it as parameter
Remove dead code from orders.

* Remove unused import.
Remove dead code from openbazaar_daemon.
Remove dead code from network_util.
Remove dead code from ws.
Remove dead code and unused attributes from dht.
Remove dead code and unused attributes from connection.
Remove dead code from multisig.
Remove dead code from market.
Remove unused attribute from ec test.