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/component/view/ScreenSearchView.h

@@ -0,0 +1,22 @@
+#ifndef SCREEN_SEARCH_VIEW_H
+#define SCREEN_SEARCH_VIEW_H
+
+#include "component/view/View.h"
+
+class ScreenSearchView
+	: public View
+{
+public:
+	ScreenSearchView(ViewLayout* viewLayout);
+	virtual ~ScreenSearchView();
+
+	// View implementation
+	virtual std::string getName() const;
+
+	virtual void setMatchCount(size_t matchCount) = 0;
+	virtual void setMatchIndex(size_t matchIndex) = 0;
+
+	virtual void addResponder(const std::string& name) = 0;
+};
+
+#endif // SCREEN_SEARCH_VIEW_H