Revision 99.security.php - Admin folder rename

Add variable in bl-kernel/boot/init.php that allows User to rename bl-kernel/admin folder. 
User can then define variable in bl-kernel/boot/init.php and change the foldername itself to effect the rename. 

99.security.php 

Line 31 - Replace Admin string with folder variable:

		     Redirect::page('admin', 'login');
Replace with  Redirect::page($adminfolder, 'login');

bl-kernel/boot/rules/99.security.php

@@ -28,7 +28,7 @@ if( $_SERVER['REQUEST_METHOD'] == 'POST' )
 		Session::destroy();
 
 		// Redirect to login panel.
-		Redirect::page('admin', 'login');
+		Redirect::page($adminfolder, 'login');
 	}
 	else
 	{