* replaced if statement with ternary operators
* overrides active template
* minor refactoring
* displays page errors based on error code
* redirects to error page when system encounters error 404
* to assist in constructing individual pages
* need to add page name function
* added function set a page name (incomplete)
* added DirectoryIndex
* created function get_content2() as a re-implementation of the former but with a different approach in order to incorporate multi-parameter handling
* makes use of get_content2() to retrieve content using one to three parameters