Implement router class (!71)

Squashed commit of the following:

Author: itismadness <[email protected]>

    fix bug with router on ajax calls
    finish up initial router implementation
    Merge branch 'master' into router
    Add tests for router
    Fix boolean on authorized function
    Finish basic implementation for the router

classes/script_start.php

@@ -413,6 +413,7 @@ define('STAFF_LOCKED', 1);
 
 $AllowedPages = ['staffpm', 'ajax', 'locked', 'logout', 'login'];
 
+G::$Router = new \Gazelle\Router(G::$LoggedUser['AuthKey']);
 if (isset(G::$LoggedUser['LockedAccount']) && !in_array($Document, $AllowedPages)) {
 	require(SERVER_ROOT . '/sections/locked/index.php');
 }
@@ -425,6 +426,20 @@ else {
 	}
 }
 
+if (G::$Router->hasRoutes()) {
+	$action = $_REQUEST['action'] ?? '';
+	try {
+		/** @noinspection PhpIncludeInspection */
+		require_once(G::$Router->getRoute($action));
+	}
+	catch (\Gazelle\Exception\RouterException $exception) {
+		error(404);
+	}
+	catch (\Gazelle\Exception\InvalidAccessException $exception) {
+		error(403);
+	}
+}
+
 $Debug->set_flag('completed module execution');
 
 /* Required in the absence of session_start() for providing that pages will change