- Fixes issue with ucwords() function on older PHP versions

- Updates Supervisor/Daemon to strip port from site_url() when it's
  running on localhost inside a virtual machine :)

lib/Queue/Daemon.php

@@ -85,7 +85,7 @@ class Daemon {
       'user-agent' => 'MailPoet (www.mailpoet.com)'
     );
     wp_remote_get(
-      site_url() .
+      Supervisor::getSiteUrl() .
       '/?mailpoet-api&section=queue&action=run&payload=' . urlencode($payload),
       $args
     );

lib/Queue/Supervisor.php

@@ -52,7 +52,7 @@ class Supervisor {
       )
     );
     wp_remote_get(
-      site_url() .
+      self::getSiteUrl() .
       '/?mailpoet-api&section=queue&action=start&payload=' .
       urlencode($payload),
       $args
@@ -87,4 +87,13 @@ class Supervisor {
       throw new \Exception('Database has not been configured.');
     }
   }
+
+  static function getSiteUrl() {
+    if(!preg_match('!:/!', site_url())) return site_url();
+    preg_match('!http://(?P<host>.*?):(?P<port>\d+)!', site_url(), $server);
+    $fp = fsockopen($server['host'], $server['port'], $errno, $errstr, 1);
+    return ($fp) ?
+      site_url() :
+      preg_replace('/(?=:\d+):\d+/', '$1', site_url());
+  }
 }