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/graphElements/QtGraphNodeAccess.h

@@ -23,6 +23,9 @@ public:
 
 	void hideLabel();
 
+protected:
+	virtual void matchName(const std::string& query, std::vector<QtGraphNode*>* matchedNodes) {}
+
 private:
 	AccessKind m_accessKind;