Updated system class redirect functionality
Moved the SystemConfig class and SystemTables class to the utilities/ folder
- They are more like utilities classes that are not really classes and includes/ don't feel like the right place for them

Updated bootstrap to add an autoloader to load classes from utilities/
Added a few new methods to the SystemConfig class
Added SiteConfig class to the utilities/ folder
- Don't feel like it belong to the includes folder nor is it really a class...

Updated bootstrap to reflect the change in the configuration file path