moved io into different subproject

Conflicts:
	src/main/scala/edu/uams/dbmi/scowl/core/ActorKernal.scala
	src/main/scala/edu/uams/dbmi/scowl/core/manager/PluginRegistry.scala
	src/test/scala/edu/uams/dbmi/scowl/core/ActorTestSuite.scala
	src/test/scala/edu/uams/dbmi/scowl/core/manager/PluginRegistryTestSuite.scala