Added a router, template engine, site-admin login, auto-configuration generator, first page of registration wizard.

Addresses Issue #1, Issue #25, Issue #30, Issue #34 and Issue #31 to some extent. 
- Made use of Slim framework for routing and templates.
- Added an example of how models, views and controllers are to be maintained. 
- Added site-admin login
- Added configuration generator for project.
- Added database import option from configuration manager (not admin panel).
- Added first page of registration wizard.