Resolve "Remove all use of GLOBALS"

Closes #13

classes/modules/UriModule.php

@@ -45,24 +45,30 @@ class UriModule implements ModuleInterface
         #Fix to handle pages that have not been loaded after cleaning out database
         $localUri_stripped = preg_replace("/^(.+)\.html$/i", "\\1", $localUri);
         $uri_stripped = preg_replace("/^(.+)\.html$/i", "\\1", $uri);
-        if ($pair == null) { // Original URI is not in metadata
+
+        if ($pair === null) { // Original URI is not in metadata
             if (Queries::uriExist($uri_stripped, $this->endpoints)) {
                 $page = Queries::createPage($uri_stripped, $localUri_stripped, $acceptContentType, $metaDb);
+
                 if ($page == null) {
                     HTTPStatus::send500("Can't write sqlite database.");
                 }
+
                 HTTPStatus::send303($page, $acceptContentType);
                 exit(0);
             } else {
                 return false;
             }
         }
+
         $extension = Utils::getExtension($pair[2], $conf['http_accept']);
         $curie = Utils::uri2curie($pair[0]);
         list($modelFile, $viewFile) = $this->getModelandView($curie, $extension);
+
         if ($modelFile == null) {
             return false;
         }
+
         $result = array(
           'res' => $pair[0],
           'page' => $pair[1],