use uuid for identifying viewers

To aid generating a cache ID, each viewer node needs a UUID. Previous iterations
tried to hash a name and time, but a UUID is a much more efficient way to do
this.

app/render/exporter.cpp

@@ -0,0 +1,6 @@
+#include "exporter.h"
+
+Exporter::Exporter()
+{
+
+}

app/render/exporter.h

@@ -0,0 +1,11 @@
+#ifndef EXPORTER_H
+#define EXPORTER_H
+
+
+class Exporter
+{
+public:
+  Exporter();
+};
+
+#endif // EXPORTER_H

app/render/exporter/openglexporter.cpp

@@ -0,0 +1,6 @@
+#include "openglexporter.h"
+
+OpenGLExporter::OpenGLExporter()
+{
+
+}

app/render/exporter/openglexporter.h

@@ -0,0 +1,11 @@
+#ifndef OPENGLEXPORTER_H
+#define OPENGLEXPORTER_H
+
+
+class OpenGLExporter
+{
+public:
+  OpenGLExporter();
+};
+
+#endif // OPENGLEXPORTER_H