Commit to current development

[core] Moved redirect function from gateway.php to Initialize.php
[core] Enhanced database escape mechanism.
[core] Enhanced Node field escape mechanism.
[framework] Exceptions.php now throws an ErrorException when an error
is captured.
[framework] Session now uses Node to delete session.
[framework] FileResolver.php now better sends HTTP cache headers, added
related constants.
[service] Added current interfaces back.

Fixed tab spacing.