Fix some more issues

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/FlagOptional.java

@@ -53,6 +53,10 @@ public class FlagOptional<T extends Enum<T> & Flag.Value<T>> {
         return this.value.equals(value);
     }
 
+    public boolean isNot(T value) {
+        return !is(value);
+    }
+
     public boolean isWithDefault(T value) {
         if (isEmpty()) {
             return flag.getDefaultValue().equals(value);
@@ -61,6 +65,10 @@ public class FlagOptional<T extends Enum<T> & Flag.Value<T>> {
         }
     }
 
+    public boolean isNotWithDefault(T value) {
+        return !isWithDefault(value);
+    }
+
     public T get() {
         if (isEmpty()) {
             throw new NoSuchElementException("No value present");