Merge pull request #1 from russel/rafał-remote-actors

Update the Netty version, and the floor Java version.
Updated groovy version in build.gradle
Register and get actor by its name
Moving toward not blocking server API
Moving toward not blocking server API
Merge remote-tracking branch 'origin/remote-actors' into remote-actors

Conflicts:
	src/main/groovy/groovyx/gpars/remote/netty/NettyServer.java
	src/test/groovy/groovyx/gpars/remote/netty/NettyServerTest.groovy