- fixed a number of tests, updating and adding specs
 * partially fixed pre processor, exporters and project tests, related project implementation change : see below
 * fixed preprocessor include process for in-project includes (reqRes issue)
 * added file/project fetch prefix for reqres, to allow different stores to respond to their specific requests
 * started modifying stores accordingly, almost there !

- moved all compiling related code to a new "compiler" class
 * modified project and project manager accordingly
 * compiler instance is passed to / instanciated in project
 * re added "compile" method to project for convienence (project is a FACADE for functionality after all)
- further enhancement and refinements to the "include" system
 * modified the "load project" methods of store to return a deferred
 * partially migrated the preprocessor to handle this correctly
 * added a small "trick" to handle "nested includes" (includes associated with a file included in another project) : when fetching file data, all relative (local)
includes are replaced with absolute ones
 * most of the test are now a-ok BUT since the defferred/async nature of file content returned to the preprocessor is not handled correctly, this might fail
 * some minor cleanup here and there
- started work on a storeBase class, to clean up the api of both store, and refactor common elements