Fixed Scala websocket integration #6
Fixed publish and send to return the current instance instead of the internal bus
Unregister handler and multiple matching handlers test cases added
Clean up properties
Changed module name to adopt official schema naming ( lang-scala instead of mod-lang-scala)
Upgrade Scala version
Upgrade Vertx version
Simplified module version (no tag released yet)
Changed container implementation to rely on named arguments instead of overloading. Only one can have default arguments see http://docs.scala-lang.org/sips/completed/named-and-default-arguments.html#default_arguments

Minor adjustments to verticles factory method
Update dependencies, Fix HttpServerRequestTest missing api method (vertx 2 final)
Merge branch 't_6' of https://github.com/galderz/mod-lang-scala into galderz-t_6

* 't_6' of https://github.com/galderz/mod-lang-scala:
  Fixed Scala websocket integration #6