test: Split RPC tests into separate files
test: Split pubsub tests into specific directory
router.js: fix indentation
handlers.js: remove odd test

A weird test prevented topics to be subscribed twice (?).
Also fixed indentation.
router: more explicit trace
session: cleanup subscription on session close
Merge branch 'master' of https://github.com/Orange-OpenSource/wamp.rt

Conflicts:
	lib/handlers.js