ui: Added single file mode to code view

* Added navigation to top of code view for iterating references and switching between list and single file mode
* current file name and reference count is shown on top in single file mode
* refactored scrolling to location or line via request system
* added parameters animated and toTop to scrolling system
* refactored class hierarchy and removed unused stuff in list mode

src/lib/Application.cpp

@@ -90,7 +90,7 @@ std::shared_ptr<Application> Application::s_instance;
 
 Application::Application(bool withGUI)
 	: m_hasGUI(withGUI)
-	, m_isInTrial(false)
+	, m_isInTrial(true)
 {
 	LicenseChecker::createInstance();
 }