Update system/core/Common.php

If using nginx instead of apache by default nginx will not populate the $_SERVER['HTTPS'] value.  This change allows falling back to checking the port number of the request to determine if your on SSL or not.

The other option is adding the following to your nginx config.

fastcgi_param HTTPS on; #some php apps require this to detent https
Revert "Update system/core/Common.php"

This reverts commit 8af05ac97513764cc539919e179794df87352c30.
Revert "Revert "Update system/core/Common.php""

This reverts commit 3de57eaea8510ea9cfd70f063565c24904669c4c.
Revert "Update system/core/Log.php"

This reverts commit bbc6ab4736a896be83e3e3d5f8856374ffa2984c.
Revert "Update system/core/Common.php"

This reverts commit 8af05ac97513764cc539919e179794df87352c30.