fixes #849
* new base.php include
* index.php has the most minimal code required, should persist through minor releases without issue to assist accidental non copy issues.
* Makes entire gs system more modular, you can now use $load['template'] to toggle template loading, for using your own framework etc.
* DEPRECATED global $base GSBASE now defined ( cannot be changed during runtime, better security , prevent global pollution privilege escalation)
* added new definitions for constants, and loaders for defining undefined user constants.
fixes #850
asset auto queue additional