Fix bug in debian init.d script

Without --background option the system does not load anything after starting
shiny-server. This is not desirable behaviour, since if ssh starts after 
shiny-server (as it did in my case), you are left with broken system.
Merge pull request #10 from vzemlys/patch-1

Fix bug in debian init.d script
Support for node-webkit-agent
Fix memory leak when restart.txt is not present
Upgrade to Q 0.9.x
*All* promise-handling chains must handle errors

Q hangs onto errors that enter chains and aren't
handled. Memory leaks result.
Add support for client sessions
Merge branch 'master' into domain-sockets

Conflicts:
	lib/proxy/http.js
	lib/worker/app-worker.js
	lib/worker/worker-registry.js