Armor stands can have potion effects

Fix note

ArmorStands can still have potion effects, however potion affects from thrown splash potions or lingering potions are not applied to them (see @unknown's comment).

The bug

ArmorStands can have potions but they do not affect them and they also show no particles.

How to reproduce

1. Place an armor stand

2. Throw a splash or lingering potion at the armor stand

3. Inspect the NBT data of the armor stand (for example by using the /entitydata command)

You will probably find the ActiveEffects tag

{NoGravity:0b,HurtByTimestamp:0,Attributes:[0:{Base:20.0d,Name:"generic.maxHealth"},1:{Base:0.0d,Name:"generic.knockbackResistance"},2:{Base:0.699999988079071d,Name:"generic.movementSpeed"},3:{Base:0.0d,Name:"generic.armor"}],Invulnerable:0b,ShowArms:0b,PortalCooldown:0,AbsorptionAmount:0.0f,FallDistance:0.0f,DisabledSlots:0,DeathTime:0s,Pose:{Head:[0:3.6275797f,1:7.3224716f,2:0.0f],Body:[0:0.0f,1:-2.029889f,2:0.0f]},Invisible:0b,Motion:[0:0.0d,1:-0.0784000015258789d,2:0.0d],Small:0b,UUIDLeast:-7734517510628796835L,Health:20.0f,Silent:1b,Air:300s,OnGround:1b,Dimension:0,Rotation:[0:0.0f,1:0.0f],HandItems:[0:{},1:{}],UUIDMost:2428460478001139510L,Pos:[0:778.5d,1:56.0d,2:-1941.5d],Fire:-1s,ArmorItems:[0:{},1:{},2:{},3:{}],NoBasePlate:0b,HurtTime:0s,ActiveEffects:[0:{Ambient:0b,ShowParticles:1b,Duration:377,Id:19b,Amplifier:0b}]}

Note: This also causes them to consum lingering potions