Erwan

- new Ability : ALifeGiver (bottle gnomes)
- Added a few cards from Tempest
- Hybrid mana fix for hybrid mana involving uncolored mana costs (see tests/generic/hybridmana2.txt - spectral possession)
- Fixed bugs with targetting for TargetAbilities
- Fixed multiple sacrifice abilities cost (Siege gang commander, see tests)
- Fixed a small font issue

projects/mtg/src/ExtraCost.cpp

@@ -43,6 +43,8 @@ int SacrificeCost::isPaymentSet(){
 int SacrificeCost::doPay(){
   if(target){
 	  target->controller()->game->putInGraveyard(target);
+    target = NULL;
+    if (tc) tc->initTargets();
     return 1;
   }
   return 0;