S3 bucket listing support and network code refactors.

* Adds support for listing all objects in an S3 bucket.
* Renames a bunch of network related classes (Download->Action)
* Net actions now have static constructors

logic/net/ByteArrayDownload.h

@@ -1,24 +1,29 @@
 #pragma once
-#include "Download.h"
+#include "NetAction.h"
 
-class ByteArrayDownload: public Download
+typedef std::shared_ptr<class ByteArrayDownload> ByteArrayDownloadPtr;
+class ByteArrayDownload : public NetAction
 {
 	Q_OBJECT
 public:
 	ByteArrayDownload(QUrl url);
-	
+	static ByteArrayDownloadPtr make(QUrl url)
+	{
+		return ByteArrayDownloadPtr(new ByteArrayDownload(url));
+	}
+
 public:
 	/// if not saving to file, downloaded data is placed here
 	QByteArray m_data;
-	
-public slots:
+
+public
+slots:
 	virtual void start();
-	
-protected slots:
+
+protected
+slots:
 	void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
 	void downloadError(QNetworkReply::NetworkError error);
 	void downloadFinished();
 	void downloadReadyRead();
 };
-
-typedef std::shared_ptr<ByteArrayDownload> ByteArrayDownloadPtr;