optimizations
fix group name usage
optimization according query
fix update of channel to avoid "address already in use"
Merge remote-tracking branch 'refs/remotes/origin/master'

Conflicts:
	kevoree-core/org.kevoree.basechecker/src/main/scala/org/kevoree/core/basechecker/namechecker/IdChecker.scala
Merge remote-tracking branch 'refs/remotes/origin/master'
fix a cast