ui: Updates for release

* updated color scheme highlight colors
* fixed highlight color resetting
* prevent project file being save with no changes
* fixed MessageListener crash due to alive flag being set too late
* new edit project icon

src/lib/utility/messaging/MessageListenerBase.h

@@ -21,9 +21,9 @@ public:
 	{
 		if (m_alive)
 		{
+			m_alive = false;
 			MessageQueue::getInstance()->unregisterListener(this);
 		}
-		m_alive = false;
 	}
 
 	uint getId() const