Merge pull request '1.12 Schem Selector Fix' (#159) from schem_sel_fix into master

Reviewed-on: #159
Reviewed-by: YoyoNow <jwsteam@nidido.de>

SpigotCore_Main/src/de/steamwar/inventory/SchematicSelector.java

@@ -279,7 +279,7 @@ public class SchematicSelector {
             }
         };
         if(filter.getOwner() == null) {
-            inv.setItem(1, Material.PLAYER_HEAD, Core.MESSAGE.parse("SCHEM_SELECTOR_FILTER_OWNER", player), ownerCallback);
+            inv.setItem(1, SWItem.getMaterial("SKULL_ITEM"), (byte) 3, Core.MESSAGE.parse("SCHEM_SELECTOR_FILTER_OWNER", player), ownerCallback);
         } else {
             SteamwarUser tUser = SteamwarUser.get(filter.getOwner());
             SWItem item = SWItem.getPlayerSkull(tUser.getUserName());