Spectators get affected by area effect clouds

[ghost]

Area effect clouds give the effect to the players inside them, and they shrink in size, when a player gets the effect, spectators still get affected by it, and the area effect cloud shrinks when spectator is inside it

[pgmann]

@AmauryCarrade, fancy doing this as you did the rest of the potions (#11)?

[pgmann]

(Related wiki article)