Fixed bug in non-eager idle detection.
Removed unnecessary awaitIdle.
Showing build status icon for master branch.
Fixed build status link.
addTargetId for EfficientPageRankVertex.

When adding edges locally this avoids the PlaceholderEdge wrapper.
Snapshot/restore uses Java ser. again.

Kryo is really slow if the cycle detection is used by default.
Fixed the Kryo performance regression.
Updated to new Kryo version.
Added Kryo registrations.
Added Kryo registration.
Merge branch 'master' into scala-2.11-akka-2.3.2-migration

Conflicts:
	README.md
	build.sbt
	src/main/scala/com/signalcollect/configuration/AkkaConfig.scala
	src/main/scala/com/signalcollect/configuration/GraphConfiguration.scala
	src/main/scala/com/signalcollect/configuration/KryoInit.scala
	src/main/scala/com/signalcollect/factory/worker/Akka.scala
	src/main/scala/com/signalcollect/node/DefaultNodeActor.scala

src/main/scala/com/signalcollect/nodeprovisioning/local/LocalNodeProvisi
oner.scala
	src/main/scala/com/signalcollect/util/AkkaRemoteAddress.scala

src/test/scala/com/signalcollect/features/ComputationTerminationSpec.sca
la
Newer Kryo version.
Added Akka default logger.
Fixed Akka system init priorities.

DefaultGraph will now still use a system stored inside the registry. I
still want to get rid of this global thing, but unfortunately it is
convenient here and seems to be the only memory-efficient way to do
logging from inside the vertices (without cluttering up the API by
passing loggers everywhere).
Merge remote-tracking branch 'origin/scala-2.11-akka-2.3.2-migration' into clusterconfig

Conflicts:
	src/main/scala/com/signalcollect/DefaultGraph.scala
	src/main/scala/com/signalcollect/configuration/AkkaConfig.scala
	src/main/scala/com/signalcollect/configuration/KryoInit.scala
	src/main/scala/com/signalcollect/factory/worker/Akka.scala
	src/main/scala/com/signalcollect/nodeprovisioning/DefaultNodeActor.scala
	src/main/scala/com/signalcollect/nodeprovisioning/Node.scala
	src/main/scala/com/signalcollect/nodeprovisioning/local/LocalNodeProvisioner.scala
	src/main/scala/com/signalcollect/util/AkkaRemoteAddress.scala
	src/main/scala/com/signalcollect/worker/AkkaWorker.scala
	src/main/scala/com/signalcollect/worker/WorkerImplementation.scala
	src/test/scala/com/signalcollect/features/ComputationTerminationSpec.scala