logic: fallback selection after refresh

* extracted code for translating input messages to token activations from the FeatureController to the helper class ActivationTranslator.
* used ActivationTranslator in UndoRedoController to determine if the symbols that have been selected before refresh are still available after parsing again.

bin/app/data/src/test2/main.cpp

@@ -1,16 +1,7 @@
 #include "header.h"
 
-#include <vector>
-
 int main()
 {
-	std::vector<Fooo<int>> yay;
-	
-	for (Fooo<int> a: yay)
-	{
-		a;
-	}
-	
 	Foo<true, int, float> ft;
 	ft.bar();
 	return 0;