Restructured filesystem, autogenerate secret key and fixed bugs

Moved "codemirror_mode_generator" into "scripts" directory

Renamed "files" to "client", and "node" to "server" for more intuitive file structure

Added autogeneration of secret key used by node to sign responses into Vagrant boostrapping script.

Added modified XTK as submodule to repository, and automatic building of XTK into boostrapping script.

Added auto re-generation of Equelle mode and hinting JavaScripts to bootstrapping script.