c0103 changes in kbucket, dht and routing_table

Conflicts:
	node/dht.py
	node/market.py
	node/routingtable.py
	tests/test_kbucket.py

removed merge-stuff

removed change of ip attribute

renamed k_bucket and k-bucket to kbucket
reverted erroneous change of findValue to find_value

revert find_node change