Add handling of email subscriptions

- Translation issue fixes #64

- Adds handler for email subscription requests

index.php

@@ -1,17 +1,35 @@
 <?php
-require_once("template.php");
+require_once("libs/parsedown/Parsedown.php");
 
-if (!file_exists("config.php"))
-{
+if (!file_exists("config.php")) {
   require_once("install.php");
-} elseif(isset($_GET['do'])){ // we can add other actions with $_GET['do'] later.
-    if($_GET['do'] == "subscriptions"){
-      require_once("subscriptions.php");
+
+} elseif(isset($_GET['do'])) { // we can add other actions with $_GET['do'] later.
+    // Fix for translation via _(). We need config.php first...
+    require_once("config.php");
+    require_once("template.php");
+    
+    
+    switch ($_GET['do']) {
+        case 'subscriptions':
+            require_once("subscriptions.php");
+            break;
+
+        case 'email_subscription':
+        case 'manage':
+        case 'unsubscribe';        
+            require_once("email_subscriptions.php");
+            break;
+
+        default:
+            // TODO : How to handle url invalid/unknown [do] commands 
+            header('Location: index.php');
+            break;
     }
-}
-else{
+} else {
 
 require_once("config.php");
+require_once("template.php");
 require_once("classes/constellation.php");
 
 $offset = 0;
@@ -27,7 +45,11 @@ if (isset($_GET['ajax']))
 
 if (isset($_GET['subscriber_logout'])){
   setcookie('tg_user', '');
-	setcookie('referer', '', time() - 3600);
+  setcookie('referer', '', time() - 3600);
+  $_SESSION['subscriber_valid'] = false;
+  unset($_SESSION['subscriber_userid']);
+  unset($_SESSION['subscriber_typeid']);
+  unset($_SESSION['subscriber_id']);
   header('Location: index.php');
 }