Adds Vagrant supported by Puppet

This allows to completely reproduce a dev environment within a few minutes.
removed the not used closure compiler from tools
Removes the dependencies from the repository

Instead, a script is used to fetch them. Documentation has to be added to
explain exactly how to use vagrant, this script will have to be included in it.
Merge remote-tracking branch 'ralt/master' into vagrant
Adds the vagrant set up documentation.
Adds the postgresql credentials to the documentation
Clean up the Vagrantfile.
Moves vagrant-related folders/files in its own folder.
Merge remote-tracking branch 'ralt/master' into vagrant
Fixes the documentation to relate the new folder structure
just changed a word in readme
Removes the vagrant-deps script

Everything is now handled through the Vagrantfile, including the puppet
modules.
Merge remote-tracking branch 'ralt/master'
Merge branch 'master' into reddit

Conflicts:
	package.json