Launch HTTP handlers in goroutines
Merge pull request #1250 from otoolep/launch_handlers_in_goroutines

Launch HTTP handlers in goroutines
Add logging of Raft initialization
Tell Broker to join during 'join-cluster'
Add connection URL to Broker
Merge branch '3_node_raft' of github.com:otoolep/influxdb into 3_node_raft

Conflicts:
	cmd/influxd/join_cluster.go