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/QtTooltipView.h

@@ -25,9 +25,6 @@ public:
 	virtual bool tooltipVisible() const;
 
 private:
-	void setStyleSheet();
-	void doRefreshView();
-
 	QtThreadedLambdaFunctor m_onQtThread;
 
 	QtTooltip* m_widget;