Cult Overhaul

Cult is awful, so let's try to improve it. Idea by KorPhaeron. I also
took some inspiration from adrix89's sacrifice cult, so credits to him.
Also thanks a lot specially to MrPerson and Iamgoofball for helping
me brainstorm this, and Joan for the sprites for the summoning orb,
the large nar-sie shell, and the new cult antag hud.

Basically, we remove conversion, and turn cult into a magic version of
nuke, with a small team of stealth elite cultists that have to build a
base in the station and sacrifice people in order to build an army of
constructs and get materials to eventually summon Nar-Sie.

Stun talismans and conversion are gone. Nar-Sie is now the only
objective. Sacrifice runes now provide summoning orbs, which you can use
to drop a large shell. Insert enough orbs in the shell and you trigger a
Delta. Defend the shell for 3 minutes and Nar-sie will arise. This shell
is bombproof and singularityproof. It may be summoned up to three times
if destroyed, but you will have to start from the beginning sac-wise.

Runes are now RNG. Each cultist only gets 50% of the runes. Inspiration
is basically The Binding of Isaac here (thank you MrPerson for this!).
Furthermore, many old runes were merged/removed and other new ones were
added. Almost all were massively rebalanced. Cult now also has a
stealthy ritual dagger with high bleeding and throw effects.

code/game/objects/items/weapons/storage/book.dm

@@ -146,17 +146,10 @@ var/global/list/bibleitemstates =	list("bible", "koran", "scrapbook", "bible", "
 		user.Paralyse(20)
 		return
 
-//	if(..() == BLOCKED)
-//		return
-
 	if (M.stat !=2)
 		if(M.mind && (M.mind.assigned_role == "Chaplain"))
 			user << "<span class='warning'>You can't heal yourself!</span>"
 			return
-		/*if((M.mind in ticker.mode.cult) && (prob(20)))
-			M << "\red The power of [src.deity_name] clears your mind of heresy!"
-			user << "\red You see how [M]'s eyes become clear, the cult no longer holds control over him!"
-			ticker.mode.remove_cultist(M.mind)*/
 		if ((istype(M, /mob/living/carbon/human) && prob(60)))
 			bless(M)
 			if(ishuman(M))