Made step to remove ASyncWindow in favour of usage of Future and FutureWatcher.

This should allow concurrency in the plugins to be independent from their container.

Contains also some work on the system for registering plugins.

pglab/plugin_support/PluginModule.h

@@ -0,0 +1,31 @@
+#ifndef PLUGIN_SUPPORTPLUGINMODULE_H
+#define PLUGIN_SUPPORTPLUGINMODULE_H
+
+#include "plugin_support/MenuLocation.h"
+#include "plugin_support/ToolbarLocation.h"
+#include <QObject>
+
+class QAction;
+
+
+class PluginModule: public QObject {
+	Q_OBJECT
+public:
+	PluginModule(QString name, QString ident);
+
+	const QString& name() const { return m_name; }
+	const QString& identifier() const { return m_ident; }
+	const QString& displayCategory() const { return m_displayCategory; }
+
+	void setDisplayCategory(QString category);
+	void registerAction(QAction *action, MenuLocation menu_location, ToolbarLocation toolbar_location);
+private:
+	/// Name shown to end users
+	QString m_name;
+	/// Unique identifier
+	QString m_ident;
+	QString m_displayCategory;
+};
+
+
+#endif // PLUGIN_SUPPORTPLUGINMODULE_H