Added action logging during attack/block of the AI player. To do that, I wrapped some of the direct access from the player to the action layer into the game observer.

First version where I managed to finish a normal game while undoing several actions until the end. There are still some problems in direct damage spells and interruption management. I added several assert in the code to catch them.

projects/mtg/src/AIPlayer.cpp

@@ -53,7 +53,7 @@ int AIAction::Act()
     }
     if (ability)
     {
-        g->mLayers->actionLayer()->reactToClick(ability, click);
+        g->cardClick(click, ability);
         if (target && !mAbilityTargets.size())
         {
             g->cardClick(target);