Add Pacifist race.

[DaloLorn]

From the Google doc at https://docs.google.com/document/d/1IY0ooOzsa2v_FlTpFj9LFKt4IQNWpaR8Tk_Q7QGD4tk/edit:

• [x] 25% boost to civilian Influence generation when not at war.
• [x] Support cards cost 10% or 1 Influence less to play, whichever is higher.
• [x] Fleet effectiveness is reduced by 15%.
• [x] Planets are ‘Happy’ when not at war.
• [x] Civilian Defense and Labor generations are reduced by 15%.
• [x] Homeworld has Allondium in addition to normal homeworld resources.
• [x] Being at war with another empire reduces civilian Research, Money and Energy generation by 20%.
• [x] Essentially the antithesis of Berserkers; Berserkers are all about conquering enemy empires in glorious battle, while Pacifists can and will win an Influence-related victory (AKA, annexing everyone else with massive stores of Influence) if left to their own devices.
• [x] Can build Embassies - orbitals which periodically send Envoy freighters to other star systems.
  • [x] Embassies generate 2 Influence, and have a 5% chance of creating a random influence card every minute. If destroyed, empire and its allies receive Leverage against the attacker.
  • [x] Envoys temporarily protect allied planets from Loyalty loss. Alternatively, they have a chance to transfer control of the enemy planet to their owner.
  • [x] This has a 10% chance of occurring when the planet’s owner declares war or an Envoy reaches an enemy planet.
  • [x] To protect planets from Loyalty loss, the Envoy’s owner must have an Alliance treaty with the planet owner.

[DaloLorn]

War-related buffs/debuffs were referenced in the Berserker issue.

Influence costs... maybe it would be easier to just give a flat decrease, though I'm not sure what value to go with.

Allondium isn't quite what it used to be, but it still seems appropriate for these guys. Envoys ought to be easy to implement using Psionic Reagents, an alliance check and the Saar. Embassies are a fairly simple thing, too.

[DaloLorn]

Envoys need another round of tests, but the race seems to work.