ui: Added on-screen search feature (issue #79)

* Use menu action "Edit -> Find in View" or Ctrl + D
* UI displayed as search bar at bottom of main window
* Hide search bar with ECS or close button
* Entering a query searches in name of graph nodes and code contents of code view
* Use Enter to iterate through matches, well move match into view in graph and code view
* Checkboxes allow for adding/removing results for certain views
* Create Bookmark shortcut is now CTRL + S

bug id = 79

src/lib_gui/qt/view/QtScreenSearchView.h

@@ -0,0 +1,44 @@
+#ifndef QT_SCREEN_SEARCH_VIEW_H
+#define QT_SCREEN_SEARCH_VIEW_H
+
+#include "component/controller/helper/ControllerProxy.h"
+#include "component/view/ScreenSearchView.h"
+#include "qt/utility/QtThreadedFunctor.h"
+
+class QtScreenSearchBox;
+class QToolBar;
+
+class QtScreenSearchView
+	: public QObject
+	, public ScreenSearchView
+{
+	Q_OBJECT
+
+public:
+	QtScreenSearchView(ViewLayout* viewLayout);
+	~QtScreenSearchView();
+
+	// View implementation
+	virtual void createWidgetWrapper() override;
+	virtual void initView() override;
+	virtual void refreshView() override;
+
+	// ScreenSearchView implementation
+	virtual void setMatchCount(size_t matchCount) override;
+	virtual void setMatchIndex(size_t matchIndex) override;
+
+	virtual void addResponder(const std::string& name) override;
+
+public slots:
+	void show();
+	void hide();
+
+private:
+	ControllerProxy m_controllerProxy;
+	QtThreadedLambdaFunctor m_onQtThread;
+
+	QtScreenSearchBox* m_widget;
+	QToolBar* m_bar;
+};
+
+#endif // QT_SCREEN_SEARCH_VIEW_H