Late joiners also get summoned guns/magic

🆑 coiax
add: If you have the (mis)fortune of late joining a shift where a crazy
wizard has given magical items or firearms to the crew, you will find
yourself also carrying such equipment.
/🆑

- Scrying orb now just grants the XRAY mutation to the first human that
picks it up
- The chance of a "special" magical item is now 1/50, up/down from 0-1
times per summon magic.
- The suppressor option in summon guns has been changed from a stetchkin
plus a silencer, to just a stetchkin with a silencer pre-installed.
- The summon magic/gun tables are now global typelists, rather than a
godforsaken giant switch statement
- Badmins can call the global /proc/give_guns(human) or
/proc/give_magic(human) for all their badmin needs.
- The chance of new players being survivor antags is the last effect
that triggered summon guns/magic (25 for wizard, 10 for summon event).

code/modules/admin/secrets.dm

@@ -463,7 +463,7 @@
 				if("All Antags!")
 					survivor_probability = 100
 
-			rightandwrong(0, usr, survivor_probability)
+			rightandwrong(SUMMON_GUNS, usr, survivor_probability)
 
 		if("magic")
 			if(!check_rights(R_FUN))
@@ -476,7 +476,7 @@
 				if("All Antags!")
 					survivor_probability = 100
 
-			rightandwrong(1, usr, survivor_probability)
+			rightandwrong(SUMMON_MAGIC, usr, survivor_probability)
 
 		if("events")
 			if(!check_rights(R_FUN))