New file structure for src

Implements Stackphp with URL Match and Lazy HttpKernel
No content response
Mpdf and twig
Twig sevice added.
Invoice generator
PSR-1 & PSR-2
PSR-1 & PSR-2
PSR-1 & PSR-2
Little changes.
Little changes.
Little changes.
Class to createinvoices.
Little functions for debugging with arrays
Controller for the cron jobs
Merge pull request #6 from AlejandroHerr/v0.2-dev

V0.2 dev