Added ability to add global variables for templates in component\View

Removed legacy rewrites configuration load in Core (redundant line in new format a few lines below).

Replaced instances of '/' in file path construction in Core.php, kickstart.php with DIRECTORY_SEPARATOR constant for improved class loading in non-UNIX file systems.

Removed stray rewrite.php file from Core folder. The correct file is /config/rewrites.php, which has been added.

Added sample URL rewrite to config/rewrites.php. Visiting /nested-sub-controller will demonstrate functionality rewrite to /sub/nested controller method.