More visual script improvements

-Added anti-aliasing on lines
-Improved draw performance enormously
-Removed sequence ports for most nodes, current visual scripts will likely be broken now. Sorry!

modules/visual_script/visual_script_func_nodes.h

@@ -328,6 +328,9 @@ public:
 
 	virtual VisualScriptNodeInstance* instance(VisualScriptInstance* p_instance);
 
+
+
+
 	VisualScriptEmitSignal();
 };