Engine fixes

• Fixed enemies not entering their 'dead' state with requires_hp/sacrifice powers (like the Antlion Burster)
• Prevent dialog topics being auto-selected for non-vendor NPCs when they shouldn't be
• Fixed the close button in the NPC dialog window not working properly in some cases
• Fixed a regression where enemy movement would remove map collision tiles
• Fixed a bug where NPCs would try to attack the player if they contained AI powers and weren't in the player's party.

Translation updates

• Indonesian (id) by Kirim Saja
• Portuguese (Brazilian) (pt_BR) update (Vicente Monteiro)
• Russian (ru) update (Igor Polyakov)
• Ukranian (uk) update (Sergiy Borodych)