Allow ClusterComm requests originate in DBservers.
Enable some more ClusterComm stuff for dbServers.
Fixed bug in cluster async communicatioN
Merge branch 'pregel' of github.com:triAGENS/ArangoDB into pregel
removed parameter
Optimized worker move copy edge result query
Merge branch 'devel' of github.com:triAGENS/ArangoDB into pregel
Merge branch 'pregel' of github.com:triAGENS/ArangoDB into pregel

Conflicts:
	js/server/modules/org/arangodb/pregel/worker.js