Fix missing AMQPConnection errors in setup

Also fixes them elsewhere, apart from having switched to a vendorized version, I also used one that is already namespaced.

The easy way out here is to use it in the namespaced fashion, it is only used in a few places and I know the library well enough to be certain that nothing much changed apart from the namespacing.

airtime_mvc/public/setup/rabbitmq-setup.php

@@ -62,7 +62,7 @@ class RabbitMQSetup extends Setup {
     }
 
     function checkRMQConnection() {
-        $conn = new AMQPConnection(self::$_properties["host"],
+        $conn = new \PhpAmqpLib\Connection\AMQPConnection(self::$_properties["host"],
                                    self::$_properties["port"],
                                    self::$_properties["user"],
                                    self::$_properties["password"],