Consolidation and new projects

Consolidates everything one might need if working on PlusPlus into a marks-and-spencer project file, including boot2docker, autossh, vagrant, virtualbox. 

Creates balloon-studios project file to pull down all our Balloon stuff. 

Adds these projects to everyone's individual manifests (apologies in advance if this is something that is perceived as rude or Not Done -- was trying to be helpful, not offend)