CC-1960: Internationalize Airtime / Support translations

- created locale table
- create locale model
- set default locale in pref table

airtime_mvc/application/models/Locale.php

@@ -0,0 +1,17 @@
+<?php
+
+class Application_Model_Locale
+{
+    public static function getLocales()
+    {
+        $con = Propel::getConnection();
+        $sql = "SELECT * FROM cc_locale";
+        $res =  $con->query($sql)->fetchAll();
+        $out = array();
+        foreach ($res as $r) {
+            $out[$r["locale_code"]] = $r["locale_lang"];
+        }
+
+        return $out;
+    }
+}