ZS_ShadowdancerOverhaul

• Health drain in Nighthaunts when draining levels no longer triggers when the target is under a Barbarian or Berserker Rage
• New ability for all shade summons: Shadow Swap. The shadow swaps its position with a friendly target, protecting them and taking over in combat for them, usable once per 5 turns, which gets reduced at higher levels. Many thanks to The Artisan for the detective work figuring out how to complete its implementation.
• Dialog to discuss strategy with shadow now fully works. Only 3 behaviors available: attack on sight (default), attack when attacked, do nothing unless ordered. More may be implemented in the future.
• Shade summons are no longer destroyed by the lights in the bg2 temple in the forest
• Drain life is no longer blocked by Silence
• Changed the summoning animation for shades, it's now shorter and uses the same animation as Ether Gate
• See Invisibility by Nighthaunts is no longer affected by wild surges, as it's not a spell but a natural ability
• Fixed some effects being dispellable when they shouldn't
• Teleport ability from greater shadow is now an at-will ability with a cooldown: 3 rounds, which is reduced by 1 round every time it evolves, up to 1 round.
• Fixed inconsistencies in number of available spells for shades across levels
• Small description tweaks
• Beshadowed Self -> Beshadow Body
• Beshadow Body ability applies resistances for 2 rounds now (from 10 seconds), and the first attack block (stoneskin) for 4 rounds (from 20 seconds)