Changed title of security record paper.

Instead of the paper being named

paper - 'Security Record'

SR-[num] '[charactername]'

SR-1 'Persh Ullman'
For example

Also title within the record

Security Record

has been changed to

Security Record - (SR-1)

This makes identifying security records without having to rename them and also adds a better paper trail to security records.

code/datums/datacore.dm

@@ -4,6 +4,7 @@
 	var/medical[] = list()
 	var/general[] = list()
 	var/security[] = list()
+	var/securityPrintCount = 0
 	//This list tracks characters spawned in the world and cannot be modified in-game. Currently referenced by respawn_character().
 	var/locked[] = list()