add minimal package.json; enable npm install
gitignore node_modules
use new socket.io and log4js api
merge 'tv/master', mahBucket is Mediengewitter again, porting

Mediengewitter has been ported to node 0.10 and npm with the help of
tvs magic and sparkles

Conflicts:
	.gitignore
	mediengewitter.js
	public/js/mediengewitter-client.js