Make sure Importer use the new application constant

- Also require the file. Force it to fail hard if not found.

classes/Importer.php

@@ -175,8 +175,10 @@ class Importer
 
     private function createNamespaces($ns)
     {
-        require('namespaces.php');
+        require_once LOADSPEAKR_ROOT . '/namespaces.php';
+        global $conf;
         $namespaces = "";
+
         try {
             foreach ($ns as $k => $v) {
                 if ($conf["ns"][$k] != $v) {
@@ -193,6 +195,7 @@ class Importer
             echo 'Caught exception while importing namespaces: ', $e->getMessage(), "\n";
             exit(1);
         }
+
         return $namespaces;
     }