Fix no sunflowers allowed

Signed-off-by: Lixfel <agga-games@gmx.de>

SchematicSystem_15/src/de/steamwar/schematicsystem/CheckSchemType_15.java

@@ -63,7 +63,8 @@ class CheckSchemType_15 {
             Material.OXEYE_DAISY,
             Material.CORNFLOWER,
             Material.LILY_OF_THE_VALLEY,
-            Material.WITHER_ROSE);
+            Material.WITHER_ROSE,
+            Material.SUNFLOWER);
 
     private CheckSchemType_15(){}