Implemented 7 random events for Halloween, 17th October to 7th November

Includes server config options holiday_random_event and force_halloween_randoms
Admin command ::hrevent -p username -e eventName
Admin command ::forcehrevents holidayName
Admin command ::stophrevents

Server/src/main/core/ServerConstants.kt

@@ -311,5 +311,11 @@ class ServerConstants {
 
         @JvmField
         var NEW_PLAYER_ANNOUNCEMENT = true
+
+        @JvmField
+        var HOLIDAY_EVENT_RANDOMS = true
+
+        @JvmField
+        var FORCE_HALLOWEEN_RANDOMS = false
     }
 }